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The community consistently reassures that sitting and crawling mature at different times for different babies, often into the 9-10 month range, and that floor and tummy time help; if you stay concerned despite a reassuring pediatrician, a developmental screening can be requested.
⚠️ Caution:If milestones are broadly delayed, muscle tone seems off, or your worry persists even after a reassuring pediatrician, ask for a developmental pediatrician screening.
Parents feel anxious when their baby hasn't reached sitting or crawling milestones that other babies seem to hit earlier, sometimes even when their own doctor is unconcerned. The community offers many real timelines showing wide normal variation, encourages tummy and floor practice over pressure, and validates that requesting a developmental screening is a reasonable step if worry lingers.
Here's what moms in our community shared based on their own experience.
Sometimes milestones mature a little late; one baby only crawled by 9 months, and some babies don't crawl at all and go straight to walking.
Doctors often consider it normal not to sit independently or crawl until 9-10 months.
Shared timelines: one baby sat at 6 months but never crawled and walked just before 13 months; another sat at 7 months, crawled around the same time, walked at 11 months; another sat about two weeks before 8 months and still didn't crawl.
A baby who sits unsupported but can't yet get into a sitting position from lying down on his own (around 8.5 months) is within the normal range; talk to your pediatrician as every child takes its own time.
If a baby can't sit up from lying down yet at 8-10 months and milestones came late overall, and you remain worried even though the pediatrician isn't, get a developmental pediatrician to do a screening.
Tummy time strengthens the back for sitting; give the baby chances to practice sitting and floor time on a mat rather than a soft bed.
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: June 17, 2026
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