Sleep Regression Series: 4-Month Sleep Regression, Signs & Tips
By Robynn Yip, Certified Gentle Sleep Coach®
(This is a part of a larger series on major sleep regressions)
If your child's sleep schedules are suddenly turning upside down—suddenly waking up every hour in the night, fighting bedtime, and getting extra clingy and fussy and skipping naps they used to love—chances are that it could be a sleep regression. These bumps in the road are inevitable and totally normal, and often coincide with big developmental growth spurts and the acquisition of major skills, as they explore rolling, crawling, walking, and first words. It usually settles down in 2–6 weeks if you stay consistent and patient, but sleep struggles can also persist long after the sleep regressions are done.
The Infamous 4-Month Sleep Regression
This is often the dreaded first big shake-up, right when your baby shifts from the newborn stage to having more predictable sleep stretches as their circadian rhythm starts to better regulate night and day. Everything feels more intense as all their senses sharpen, and they start piecing together the world around them, little by little.
Some signs:
Night wakings every 1–2 hours, even on good days
Super-short naps, just 20–45 minutes, no matter what you try
Extreme separation anxiety, fussy evenings (or the entire day), fighting the crib despite obvious yawns and heavy eyes
Suddenly needing more rocking or feeding to settle, after outgrowing it
Cluster feeding that ramps up right before bed or during wake-ups
More daytime grumpiness from all the exhaustion buildup
Heightened awareness of their surroundings
Some attempts to roll, or already rolling (Sleep regressions often happen right before, or simultaneously)
How to navigate it
R — Routine
Have a strong morning routine to start the day, like a playlist and "curtain time" to let the sunlight in. Also, maintain a bedtime routine where book reading can serve as a "sleep cue" to gently transition out of rocking or feeding your baby to sleep.
E — Environment
Create a safe sleep environment. Use sunlight exposure during the day to regulate your baby’s circadian rhythm. Check your environment for light leaks, and try to find an appropriately sized pull-up diaper for overnight to minimize the need for changes.
S — Schedule
Make sure wake windows are not too wide to prevent the cortisol buildup that impacts sleep.
T — Training
At this stage, training is still very early, so it is important to do it very gradually and gently, giving your baby more opportunities to fall asleep with less adult assistance over time. One tip is to sing a lullaby right after you place them into the crib, or use a wind-up, neutral-colored musical mobile that distracts them from the need to rock.
A note on feeding
At 4 months old, babies may still need 1–2 feedings at night and that is entirely normal. It is important to tag team, and depending on development, it is important to check with your pediatrician whether or not night weaning is suitable at this stage for your unique baby.
Age-Based Sleep Needs
Total Sleep: 12-15 h
Wake Windows: 1.5-2 h
Total Nap Time: 3.5-4.5 hours
# of Naps: 3-4
Sample 3-Nap Schedule
7:00 AM: Wake and feed
9:00 AM – 10:00 AM: Nap 1
11:00 AM: Feed
1:00 PM – 3:00 PM: Nap 2
3:00 PM: Feed
5:00 PM – 5:30 PM: Nap 3
6:00 PM: Feed
7:30 PM: Bedtime
11:00 PM: Dream Feed
(3-5 AM: Night Feed Option)
For You
Mental remeinder: Raising a baby takes a village. It is okay to get support when you feel like you need it—don't try to do it alone! Do not let mom-guilt get in your way of outsourcing some help for your own mental health, there is no shame in needing support! We all figured it out the same way.
Beyond that, manage your sleep expectations and avoid comparison with other moms and other babies. Having a healthy relationship with internet research and chatter amongst other anxious new parents who are also figuring it out - things are hard enough, relationships amongst should feel supportive and not competitive!
Sleep should be regarded as personal and sacred, and therefore the approach should be mindful and holistic. If you are in the middle of this and want help navigating it, I am here to support you in building a plan that works for your family. Reach out today to schedule a consultation.
