What is 4-month sleep regression and how long does it last?
⚡ Short answer: The 4-month sleep regression is when your baby's sleep cycles mature permanently; it's not an illness and usually resolves on its own in 2-4 weeks.
Anonymous
4 aylık bebek annesi · Sleep
My baby suddenly started sleeping poorly at 4 months, waking frequently at night. I've heard of sleep regression—is that what this is? How long does it last?
Maiyko AI ADVISOR
The real reply from the in-app AI advisor
Changing sleep patterns at this age is very common, and you're not alone. Many 4-month-olds start waking more frequently at night—this is usually called the 4-month sleep regression. The reason is that your baby's sleep cycles are beginning to resemble those of adults, meaning lighter sleep with more frequent awakenings. This is not an illness, but part of neurological development.
It usually resolves on its own in 2 to 4 weeks. During this time, instead of immediately picking up your baby when he wakes at night, try gently patting his back in the crib and making "shushing" sounds to calm him—sometimes giving him a small space to learn to fall back asleep on his own helps. Your baby won't be harmed, and if he shows no symptoms other than restlessness, there's no need to worry. If it goes beyond 2 weeks or if vomiting, diarrhea, or fever accompanies the waking, consult your pediatrician.
⚕️ Health note: This answer is for general information only; it is not medical advice. Every baby is different — for decisions about your baby's health, consult your pediatrician.
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