What to do if your child isn't sitting up yet

When your little one isn't sitting up yet, it's natural to wonder — and the gentle truth is that babies bloom on their own timeline, with plenty of playful ways to help them along.

In short

Most babies sit with support from around 6 months and sit steadily on their own by about 9 months — but there's a wide, healthy range. If your baby isn't sitting yet, keep offering daily tummy time and supported sitting practice, and watch their overall pattern of movement. If your child is past 9 months without sitting, seems very floppy or very stiff, isn't bearing weight on their arms, or has lost a skill they once had, it's worth a friendly developmental check — early support is gentle, playful and effective.

What helps right now

• Tummy time, often and short — several brief sessions a day build the neck, back and core strength that sitting needs. Get down to their eye level and make it fun.
• Supported sitting practice — sit your baby in your lap or propped with cushions, letting them feel what upright balance is like. Bring toys to their midline so they reach and shift weight.
• Encourage reaching and rolling — place a favourite toy just out of reach to invite movement; rolling and pushing up are stepping stones to sitting.
• Strengthen the push-up — when on their tummy, encourage them to prop on forearms then straight arms; this arm strength supports sitting balance.
• Follow your baby's cues — keep it joyful and unhurried. Strength and balance grow with happy, repeated practice, never pressure.

When to seek a check

Sitting steadily unsupported is usually expected by around 9 months. Speak to your paediatrician or book a developmental check if your baby is past this point and not sitting, feels unusually floppy (low muscle tone) or stiff, strongly favours one side of the body, isn't using both hands to reach, or has stopped doing something they could do before. These are reasons to look closer — not reasons to panic — and the earlier we understand the pattern, the gentler the support.

The Pinnacle way

AbilityScore® is part of Pinnacle’s developmental assessment. Diagnosis, where needed, requires an appropriately qualified healthcare professional — never from an app or online form. Across 70+ centres and 25 million+ therapy sessions, our therapists turn motor milestones into play. Begin with a precise developmental profile, and where movement needs a boost, our occupational therapy programme builds core strength and balance step by playful step.

Trusted sources

CDC developmental milestones guidance on sitting and gross-motor progress; American Academy of Pediatrics (HealthyChildren.org) on tummy time and motor development; WHO guidance on early childhood motor milestones.

Next step — Wondering about your baby's progress? Book a developmental assessment with a Pinnacle clinician.

This is general information, not a diagnosis — individual assessment and diagnosis require an appropriately qualified healthcare professional.