The Truth About Baby Sleep Regression (and How to Get Through It Without Losing Your Mind)
We see it every week in class—parents clutching flat whites like lifelines, mum-buns slightly higher than usual, eyes wide with what the actual… is going on?! Welcome to the 4 month sleep regression baby zone. If your previously snoozy newborn has suddenly turned into a nocturnal party animal, it’s not just you. And no, you haven’t done anything wrong.
Let’s break down what’s really happening, why it’s a twisted badge of developmental honour, and how to survive it with at least some of your sanity intact.
What Is the 4 Month Sleep Regression Baby Phase (and Why Is It So Savage)?
The 4 month sleep regression baby stage is basically your baby’s brain levelling up—hard. Around this age, babies switch from newborn-style sleep to a more adult-like sleep cycle. Sounds good, right? Not quite. Because now they’re going through lighter sleep stages, waking up more often, and needing help to drift back off.
You might notice:
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Catnaps replacing proper naps
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Nighttime wakings that feel like clockwork
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Clingy, cranky moods (babies AND parents, tbh)
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Bedtime suddenly turning into WrestleMania
The good news? It means their brain is developing like it should. The bad news? It’s a bit of a bumpy ride getting there.
Survival Tips That Actually Help
🔁 Create a Ritual (Not a Rigmarole)
Babies thrive on cues. A warm bath, baby massage, a soft lullaby, sensory light play, or a calm story can work wonders. Keep it chill, consistent, and soothing—think ritual, not routine on steroids.
🌙 Use Sensory Play to Your Advantage
Sensory play in the lead-up to sleep can help your baby wind down naturally. In our classes, we use soft textures, mellow music, and gentle lights to help little ones regulate. It’s magic. (Not actual magic—but honestly, close.)
🤝 Don’t Fear the Snuggle
You’re not “creating bad habits” by cuddling or feeding them to sleep during this regression. You’re parenting. Comfort them, support them, and know that sleep patterns will reset.
🧠 Know What’s Going On in That Tiny Brain
Understanding the science behind it helps. The NHS has a brilliant breakdown of baby sleep and what to expect at this stage. It’s reassuring to know what’s “normal”—even when it feels anything but.
🥱 Look After You, Too
If you’re running on fumes and carbs alone, please know that’s valid. Tag-team the nights if you can. Cancel stuff. Say no more. You can’t pour from an empty coffee mug.
So… When Does It End?
Most babies ride out the 4 month sleep regression baby stage within 2–6 weeks. It’s tough, but temporary. You’ll see the gains soon—rolling, stronger awareness, deeper connections with you. It’s all building towards something amazing.
And until then? Low expectations. Big cuddles. Strong coffee. And a reminder that you’re not alone in this sleep-deprived circus.
P.S. Our sensory storytelling sessions are like a soothing bubble for you and baby. They help regulate those tiny nervous systems (and yours too, if we’re honest). Come join us and meet other parents who are also up all night Googling “how to get baby to sleep.”
👉 Book your local class
