6-to-9-month-old
Is my 6-to-9-month-old on track developmentally?
Between 6 and 9 months most babies are sitting with less support, babbling, rolling, reaching and showing interest in faces and games — within a wide, normal range. Your baby is likely on track if they respond to you and keep adding new skills. Seek a gentle developmental check if, by around 9 months, they aren't sitting with support, babbling, turning to your voice, sharing smiles or reaching for objects — or if they've lost a skill. These are reasons to look early, not a diagnosis.
Watching your baby grow between 6 and 9 months is a season of big firsts — sitting, babbling, reaching for the world — and noticing what they do is loving, watchful parenting.
In short
Most 6-to-9-month-olds are busy sitting, babbling, rolling, reaching and beginning to explore — and there's a wide, normal range of when each skill appears. Your baby is likely on track if they are responding to you, showing interest in faces and objects, and steadily adding new skills month by month. This isn't a test to pass — if anything gives you pause, a gentle developmental check is a wise, calm next step, because early support works beautifully at this age.What's typical at 6–9 months
Babies bloom at their own pace, but by this window many will be:- Moving — sitting with less and less support, rolling both ways, pushing up on hands, and perhaps starting to scoot or rock on all fours.
- Reaching and grasping — passing toys hand to hand, raking small things towards them, bringing objects to the mouth to explore.
- Communicating — babbling with strings of sounds ("bababa", "mamama"), turning to your voice, laughing and squealing.
- Connecting — smiling at familiar faces, enjoying peek-a-boo, showing they know you from a stranger.
Remember: a baby born early should be looked at by their corrected age, and a skill arriving a few weeks later than a chart says is usually still well within normal.
When a gentle check is wise
Trust your instinct and arrange a developmental review if, by around 9 months, your baby:- Is not sitting with support, or feels very stiff or very floppy in your arms.
- Makes few or no babbling sounds, or has gone quiet after starting.
- Does not turn to your voice, share smiles, or show interest in faces and games.
- Does not reach for or hold objects, or strongly favours one hand only.
- Has lost a skill they once had — this always deserves prompt review.
None of these is a diagnosis. They simply mean a clinician's calm, early look turns small questions into early opportunities.
The Pinnacle way
A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care — never from an online checklist. Across 70+ centres and 25 million+ therapy sessions, our clinicians build a warm, complete picture of your baby's strengths first. If support is helpful, our early intervention and occupational therapy teams shape everything around play. You're always welcome to [start here](/).Trusted sources
CDC developmental milestones and "Learn the Signs, Act Early" resources for infants; American Academy of Pediatrics guidance (healthychildren.org) on monitoring development through the first year; WHO Nurturing Care framework on responsive caregiving and early development.Next step — Trust what you've noticed. Book a developmental assessment for a calm, clear review of your baby's milestones with a Pinnacle clinician.
This is general information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre under qualified clinician care.
What to watch
By around 9 months, seek a check if your baby isn't sitting with support, feels very stiff or floppy, makes few or no babbling sounds, doesn't turn to your voice or share smiles, doesn't reach for or hold objects, or has lost a skill they once had. Use corrected age for babies born early.
Try this at home
Keep a short phone note of new firsts — first proper sit, first babble string, first hand-to-hand pass. Watching skills steadily build over weeks tells you far more than any single day, and gives a clinician a clear picture.
Trusted sources
Developed by SETU Consortium · Pinnacle Blooms Network · Last reviewed 2026-06-10 · reviewed every 365 days
This is general information, not a diagnosis. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care.
Frequently asked
What should my baby be doing at 6 to 9 months?
Many babies in this window are sitting with less and less support, rolling both ways, babbling sound strings like "bababa", passing toys hand to hand, reaching for objects, and smiling at familiar faces. Babies bloom at their own pace, so a few weeks' variation is usually still within the normal range.
My baby isn't sitting unsupported yet at 8 months — should I worry?
Sitting independently emerges across a wide window and many babies are still steadying themselves at 8 months. If your baby is sitting with support, reaching, babbling and connecting with you, this is usually fine. If by around 9 months they cannot sit with support or feel very stiff or floppy, a gentle developmental check is wise.
Should I use my baby's actual age or corrected age?
If your baby was born early, look at milestones by their corrected age — that is, their age counted from the due date rather than the birth date — until around two years. This gives a fairer picture of where their development really is.
When should I see someone about my baby's development?
Trust your instinct. Arrange a developmental review if, by around 9 months, your baby isn't sitting with support, makes few or no babbling sounds, doesn't turn to your voice or share smiles, doesn't reach for objects, or has lost a skill once had. This is a reason to look early, not a diagnosis.