Someone told you to just wait for it.

Maybe it was your mom. A friend. Your pediatrician. “Oh, you just wait for the four month sleep regression.” Said with a knowing look. Maybe even a little sympathy. And somewhere underneath that warning was the unspoken message: this is coming for you, and there’s nothing you can do about it.

I am here to tell you that’s wrong.

Not just a little wrong — deeply, fundamentally wrong. And the fact that it gets repeated so casually, so matter-of-factly, to tired parents who are already hanging on by a thread? That’s something I feel really strongly about changing.

The four month sleep regression is one of the most misunderstood moments in early parenthood. And because it’s misunderstood, so many families end up suffering in silence — waiting for light at the end of a tunnel that keeps moving further away.

I’ve been a holistic sleep coach for 8 years. I’ve worked with over 700 families. I coached my own son through this exact developmental window. And I want to give you what nobody gave me when I was in the thick of it: the actual truth about what’s happening, and what you can do about it.

It’s Not a Regression. It’s an Awakening. Your baby and how sleep works in the body are changing.

Let’s start here, because language matters.

The word “regression” implies that your baby is going backwards. That sleep was a certain way, and now it’s worse, and your baby has somehow unlearned how to sleep.

That is not what’s happening.

What’s actually happening at four months is one of the most significant developmental leaps of your baby’s entire first year. It just happens to shake everything up in the process.

Here’s what’s going on under the surface:

Around four months, your baby’s circadian rhythm begins to develop for the first time. Before this, newborns operate on a 24-hour cycle of eating and sleeping — they don’t have a true internal clock yet. As you approach the four-month mark, that changes. Your baby transitions from newborn sleep patterns into something much closer to adult sleep cycles, cycling between lighter and deeper stages of sleep throughout the night.

This is also the window where you’ll see your baby come alive in a completely new way. More alert. More engaged. Tracking you across the room. Practicing early rolling. Discovering their hands. Smiling, cooing, laughing. If there were a soundtrack to this developmental moment, it would be A Whole New World — because that is genuinely what it is for them.

Your baby hasn’t regressed. They’ve woken up.

The problem is that this beautiful awakening also means that everything that was working for sleep before may suddenly stop working. The rocking that used to knock them out in ten minutes now takes thirty — or doesn’t work at all. The pacifier that was a reliable sleep tool gets spit out mid-cycle and suddenly you’re up replacing it every forty-five minutes. Sleep stretches that were getting longer are now back to one or two hours.It feels regressive. I understand why it gets called that. But it isn’t.

Why “It’s Just a Phase” Is Such Frustrating Advice

Here’s the problem with waiting it out: babies don’t stop growing.

Think about the typical regression timeline: four months, six to seven months, eight to twelve months, twelve to thirteen months, fifteen to sixteen months, eighteen months, twenty-four months. That’s every one to two months of your baby’s first two years of life. If we accept the “just wait it out” logic for all of those milestones, we are essentially signing up for two to three years of unpredictable, disrupted sleep with no end date and no path forward.

I’m not signing up for that. And you don’t have to either.

When families come to me asking how they’ll know if it’s just a phase — or something more — here’s what I tell them: for some babies, the four-month disruption is brief and relatively mild. If your baby had a solid newborn sleep foundation and things bounce back within a couple of weeks, you may be in that camp.

But for many babies? That’s not what happens. I just got off the phone before recording this episode with a mom whose baby is five months old and still hasn’t slept normally since the four-month regression hit. One month of fragmented sleep. Of waiting. Of hoping. Of being told, just a little longer.

That’s not a phase. That’s an underlying struggle, a missing piece of their sleep puzzle that’s been left unaddressed — and every developmental wave that passes without a foundation in place just makes it harder.

The Real Reason Sleep Falls Apart at Four Months

Here’s the most important thing to understand: your baby doesn’t just wake up one day, hit four months, and forget how to sleep.

It’s not like learning the ABCs and then turning four months old and suddenly not knowing them anymore. Skills that are truly foundational don’t disappear just because your baby grows.

What actually happens is this: babies approaching four months usually don’t have a solid sleep foundation yet or sleep skills. They’re coming out of the newborn phase — where the need for co-regulation – holding, rocking, nursing, bouncing, and contact napping are completely normal  — without independent sleep skills. And when development accelerates and those existing sleep supports stop working as reliably, there’s nothing underneath to hold sleep up.

The development didn’t cause sleep problems. It revealed them.And on the flip side: when a baby does have a solid sleep foundation — age-aligned and appropriate schedule, they have learned to efficiently feed, they have a conducive sleep environment, and independent sleep skills — developmental peaks cause ripples, not collapses. Sleep may shift briefly. Naps might run short for a stretch. There might be a few extra wakings. And then sleep resumes, because the skills are still there.

The Four Factors That Actually Affect Your Baby’s Sleep

When I assess sleep with families, I’m looking at four interconnected areas — not just one. This is what holistic sleep coaching actually means. Sleep is never just one thing.

Schedule. Is your baby’s schedule age-appropriate? Awake windows are one of the biggest levers in sleep improvement, and babies who are carrying around overtiredness or under tiredness don’t always fit neatly into the standard guides. Knowing the windows is a starting point — knowing how to read your baby within those windows and adjust as needed is the real skill.

Nutrition. Sleep and nutrition are deeply connected. A baby who is feeding efficiently during the day is building a nutritional baseline that supports better sleep. But babies who aren’t eating efficiently — who are snacking, who have feed-sleep associations, who aren’t getting full feeds in the right windows — tend to have sleep struggles that go hand-in-hand with those feeding patterns.This was absolutely the case with my son, and it’s important to note, it’s very common when babies are having sleep struggles, that they also may need adjustments to when and how they are feeding to improve feeding and sleep.

Sleep environment. In years of doing this work, I will tell you: almost every single room I’ve assessed hasn’t been nearly dark enough. We underestimate how much environmental factors — light, temperature, sound, the physical sleep space — affect our babies’ sleep. It’s often a small adjustment with a noticeable impact.

Sleep associations. This isn’t about shame. Young babies need help to fall asleep — that’s completely normal and expected. But when we get out of the newborn phase and we’re still relying on nursing, rocking, or a pacifier to put a baby to sleep every single sleep transition, those associations become the thing standing between your baby and independent sleep. The question isn’t whether your baby has associations. It’s whether you want them to eventually sleep independently — and if so, that’s where we start. For some babies, they are helped to sleep, and they sleep. For others, they are helped to sleep, and they still struggle to sleep. This is what commonly leaves parents frustrated, doubting themselves, questioning, “what am I doing wrong?” “what am I missing?”.

Should You Wait Until the Regression Passes to Start Sleep Work?

This is one of the most common questions I hear, and my answer is always the same: no.

The four to six month window is actually one of the best times to assess your baby’s sleep and start making changes. Not because your baby is suffering (though the sleep deprivation can absolutely feel that way). But because babies this age are 100% developmentally capable of learning independent sleep skills, and addressing things early means you’re not playing catch-up through every developmental wave that follows.

For families wondering about cry-based methods like Cry-it-Out or even Ferber — yes, I’d say wait on those. Young babies aren’t developmentally ready. For me cry-it-out is not sleep training, but an unmodified extinction method. The method I follow, a holistic sleep training approach is behavioral sleep interventions. Holistic sleep coaching at four months looks different. It’s gentle, it’s age-appropriate, and it addresses all four of those factors simultaneously rather than just hoping extinction works. It is rooted in education, connection, and responsiveness.

I want to be honest with you: sleep training — even done gently — may involve some crying, especially when you are truly helping a baby learn to sleep independently. Babies communicate through crying, and learning new skills can be uncomfortable. But there is a difference between the exhausted, frustrated, undertired or overtired crying that comes from a baby without sleep skills, and the short adjustment period that comes from learning something new. I’ve seen that transformation hundreds of times. 

Babies as young as three to four months are capable of learning to sleep through the night. I want to be careful here — “sleeping through the night” doesn’t mean never waking. We all wake between sleep cycles. But babies with solid sleep skills can also learn to put themselves back to sleep without needing help. And a natural hunger window — often between 12am and 4am — is still respected and we can offer a feed as your baby continues on their natural path to learning to sleep through the night. As skills develop and overtiredness resolves, most babies naturally drop that feed and sleep until morning.

My Own Four-Month-Old Was My First Client

I became a sleep coach because of my firstborn son.

Sleep with him in the newborn phase was so bad that I remember thinking, at least I don’t have to be scared of the four month sleep regression — it literally can’t get worse. That is how bad it was.

I was a breastfeeding mom. He had a natural feed-sleep association. He was snacking constantly day and night. I was a human pacifier. Even though he was a healthy baby at a great weight, he was severely overtired, not feeding efficiently, and had no independent sleep skills whatsoever.

When he was around 8 weeks, I connected with a sleep coach to just understand what I was experiencing with his sleep, I felt so relieved to understand him deeper. I was also made aware that once he was closer to 4 months, I could make some actual changes to help him learn to sleep.  When he turned 4 months, we got started and went through the process of holistic sleep training. It was night and day. He started sleeping through the night. His naps became real naps. He woke up happy. The difference in him was visible, I had a brand new happier, calmer baby. 

My pediatrician had been telling me it was just the four-month regression. Just a phase. He’s a young baby. This is normal.

It wasn’t normal. And I am so grateful I didn’t keep waiting.

What’s Waiting on the Other Side

Imagine knowing that when your baby hits a developmental leap, you’re not bracing for impact. You’re not tensing up, waiting for sleep to fall apart again. You’re watching your baby grow — noticing the new smiles, the new skills, the whole new world they’re waking up to — without it pulling the floor out from under your family’s rest. There is much more enjoyment in that.

That is what life looks like with a solid sleep foundation.

Not perfect sleep, every single night, no matter what. But sleep that is yours. Sleep you can count on. Sleep that flexes with your life instead of breaking every time something changes.

You stop waiting for the next sleep bomb to drop. You start actually enjoying this season.

You Don’t Have to Do This Alone

If you’re reading this and something is landing — if any part of you is thinking I want this for my family — here’s where to start.

📥 Grab the free masterclass — Head to https://empoweredwithanne.com/masterclass and watch What is Holistic Sleep Training?. It’s the foundation: awake windows, sleep pressure, and what age-appropriate sleep looks like for your child right now.

🔍 Book a Sleep Insight Audit — Not sure if you’re ready for full training? I’ll do a personalized assessment of your baby’s current sleep and give you specific, actionable recommendations. No commitment required — just clarity.

📞 Book a free Explore Call — Let’s talk about what’s going on with your family’s sleep and whether holistic sleep training is the right next step. It’s free, it’s zero pressure, and you’ll leave the call knowing more than when you got on. Head to https://EmpoweredWithAnne.as.me/FreeSleepChat to book.