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Sleep

My 3-month-old is in active sleep all night, thrashing and making sounds. When will this get better?

Many moms share that baby sleep often improves after 4 months, but there can be regressions later. Routines help, but some restlessness, crankiness, and increased alertness at night is normal in the first year.

💡Quick Answer

  • •Active sleep is common at 3 months (thrashing, sounds, movements)
  • •Increased crankiness and alertness at night is typical at this age
  • •Try white noise and a darker room to reduce startling
  • •If baby is safe and not crying, you don't need to intervene
  • •Consider moving baby slightly farther from loud household noise
  • •Ensure naps are not too long or too late in the day
  • •Many moms notice improvement as sleep matures after 4 months

⚠️ Caution:If movements seem repetitive/jerky in a concerning way, or baby has breathing issues, fever, or seems unwell, consult your pediatrician.

🤔What Parents Worry About

Parents worry baby isn't 'really sleeping' or something is wrong neurologically. Moms often reassure that noisy active sleep is normal in early months—intervening too quickly can actually wake baby more.

Community Answers from Moms(3)

Here's what moms in our community shared based on their own experience.

  1. 1

    Some moms noticed sleep becoming a bit better around the end of 4 months after they set a consistent bedtime routine.

  2. 2

    Others share that even after things improve, 6-month regressions can happen and babies may wake more often again.

  3. 3

    It helps to mentally prepare that baby sleep is an ongoing process for the first 1–1.5 years with good nights and tough nights mixed in.

About These Answers

The information shared on this page comes from real experiences of mothers in our community. While we strive to provide helpful insights, this content is for informational purposes only and should not be considered medical advice. Always consult with your pediatrician, healthcare provider, or other qualified medical professional for any questions regarding your child's health or development.

Last reviewed: February 17, 2026

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My 3-month-old is in active sleep all night, thrashing and making sounds. When will this get better? | Real Mom Answers | Mom Insider