Just when you thought you had your baby’s sleep figured out, they suddenly start waking up more often, crying at night, and fighting naps. Welcome to the 4-month sleep regression—a completely normal (and temporary) phase in your baby’s development.
Dr. Hannah Lewis, Pediatric Sleep Specialist:
“The 4-month regression is not a setback—it’s a progression. It reflects major changes in how your baby’s brain processes sleep.”
What Is the 4-Month Sleep Regression?
Around 3–5 months of age, many babies go through a sudden change in sleep behavior. Their sleep cycles mature, becoming more like an adult’s, with lighter stages of sleep between deep ones. This means they now wake more easily between cycles—and often need help falling back asleep.
Common Signs of the 4-Month Sleep Regression
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Frequent night wakings
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Shorter naps or skipped naps
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Increased fussiness or crying
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Difficulty falling asleep (even when tired)
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Needing more help to settle (rocking, nursing, etc.)
💡 Good news: This stage usually lasts 2–6 weeks.
Why It Happens
✔️ Neurological development: Brain growth triggers more active and lighter sleep cycles
✔️ Increased awareness: Baby notices their surroundings more and may struggle to self-soothe
✔️ Growth spurt: More calories and comfort may be needed
✔️ Emerging motor skills: Rolling, kicking, and movement can interfere with sleep
How to Support Your Baby Through It
1. Stay Consistent With Sleep Routines
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Use calming, predictable bedtime and nap routines
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Dim lights, reduce stimulation, and create a wind-down ritual
2. Encourage Daytime Sleep
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Overtired babies sleep worse at night
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Offer naps every 1.5–2.5 hours depending on your baby’s age
3. Allow for Independent Settling
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If safe and appropriate, give your baby a few minutes to resettle during night wakings
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Try placing baby in the crib drowsy but awake
4. Feed Responsively
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Sleep regression often coincides with growth spurts—offer extra feeds if needed
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Night feeding is still normal at this age
5. Take Care of Yourself, Too
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Trade off night shifts with a partner if possible
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Nap during the day or ask for support—you need rest, too
The Role of Moogco Silver Nursing Cups
If you’re breastfeeding during a sleep regression, frequent feeds and cluster nursing can cause nipple discomfort.
Moogco Silver Nursing Cups offer natural relief with their antimicrobial, soothing properties—helping you nurse through even the most exhausting nights.
Final Thoughts: This Too Shall Pass
The 4-month sleep regression is tough—but temporary. It’s a sign your baby’s brain is growing and developing new sleep patterns. With patience, routine, and gentle support, you’ll both adjust to this new stage and move toward more restful nights ahead.
🛒 Discover sleep tools and mama support essentials at Moogco Baby
