What milestones should a 6-month-old have?

Most 6-month-olds can sit with support, roll both ways, bear weight on their legs when held upright, reach and grab objects, recognize familiar faces, and produce babbling sounds including 'mama' and 'dada' (not yet meaningfully).

When should I start solid foods?

Most pediatric guidelines recommend introducing solids around 6 months, when babies show signs of readiness: sitting with minimal support, good head control, showing interest in food, and having lost the tongue-thrust reflex. Always consult your pediatrician before starting.

What is object permanence in babies?

Object permanence is the understanding that objects continue to exist even when out of sight. It begins to emerge around 4–6 months and develops further through the first year. You may notice your baby looking for a dropped toy — an early sign of object permanence.

When do babies sit up on their own?

Many babies sit briefly with support around 4–5 months. Sitting without support typically develops between 6 and 8 months. By 9 months, most babies can sit independently for extended periods.

Guides · Development

6-month baby development: sitting, solids & social milestones

Six months is a major milestone month. Your baby is more physically capable, more socially engaged, and ready for some big changes — including the introduction of solid foods. This guide covers what most 6-month-olds can do, what object permanence means, and how to approach starting solids.

Motor development at 6 months

Sitting with support: most 6-month-olds can sit in a supported position — with a pillow behind them or your hands at their sides — for several minutes. The core muscles are still developing; unsupported sitting usually comes between 7 and 9 months.

Rolling both ways: rolling from back to tummy, which is harder than the reverse, typically appears around 5–6 months. By 6 months, many babies roll confidently in both directions and may use rolling as their main method of moving around.

Weight bearing on legs: when held upright with feet on a surface, 6-month-olds push down firmly. This "practice standing" strengthens the leg muscles needed for pulling to stand and eventually walking.

Reaching and grabbing: hand-eye coordination has improved enough that babies can reach accurately for objects and bring them to their mouth. Everything is explored orally at this age.

Transferring objects: many 6-month-olds can pass an object from one hand to the other.

Sitting tripod: some babies achieve "tripod sitting" — leaning forward on their hands for support — as a precursor to fully independent sitting.

Cognitive development at 6 months

Object permanence emerging: before 4–6 months, when an object disappeared, it ceased to exist in the baby's mind. Around 6 months, object permanence begins — if you drop a toy and it rolls away, your baby may lean over to look for it. This also explains why hide-and-seek games become exciting.

Exploring with mouth: mouthing everything is how 6-month-olds learn about the world. Shape, texture, temperature, and weight are all discovered this way. This is developmentally important (and normal).

Cause and effect: banging a toy on a surface to make noise, pressing a button repeatedly — 6-month-olds are experimenting with cause and effect in increasingly deliberate ways.

Spatial awareness: babies begin to understand near and far, and will track an object moving away from them.

Social and emotional development at 6 months

Recognizing familiar faces: by 6 months, babies clearly recognize parents, siblings, and other regular caregivers. They may respond differently to familiar versus unfamiliar faces.

Preference for caregivers: some separation anxiety begins to emerge. Your baby may fuss when a primary caregiver leaves the room — a healthy sign of attachment.

Social engagement: 6-month-olds are social butterflies — they smile, laugh, and enjoy social games like peek-a-boo and pat-a-cake with familiar people.

Showing emotions: babies this age express a wider range of emotions clearly — joy, frustration, curiosity, and distress — and read your emotional expressions in response.

Language and communication at 6 months

Babbling "mama/dada" sounds: babbling becomes more complex at 6 months, with strings of consonant-vowel combinations. Sounds like "mamama" and "dadada" appear, though not yet used meaningfully.

Imitating sounds: babies begin to imitate sounds and mouth movements you make — stick out your tongue and see if they copy.

Responding to tone of voice: a sharp "no" or a warm, encouraging voice produces visibly different reactions.

Babbling as conversation: 6-month-olds babble as if having a conversation, with pauses that invite your response.

Starting solids at 6 months

Most major pediatric organizations (AAP, WHO) recommend introducing solid foods around 6 months, alongside continued breast or formula feeding. Signs of readiness include: sitting with minimal support, good head and neck control, loss of the tongue-thrust reflex (not automatically pushing food out of the mouth), and showing interest in food (watching you eat, reaching for food).

First foods typically include iron-rich purees (meat, lentils), single-grain cereals, and pureed vegetables or fruit. Introduce one new food at a time, waiting 3–5 days to watch for allergic reactions. Early allergen introduction (peanuts, eggs, tree nuts) is now recommended by most guidelines — ask your pediatrician.

Keep breast or formula feeds as the main nutrition source for the first months of solid introduction.

Red flags to discuss with your pediatrician

Not sitting even with support by 6 months
No babbling or vocal sounds
Shows no interest in faces or social interaction
Doesn't reach for objects
Doesn't roll in either direction
Seems very stiff or very floppy

Raise these at the 6-month check-up. Early intervention, if needed, is most effective early.

How Bebblo helps at 6 months

Starting solids adds a new tracking dimension. Bebblo lets you log solid food sessions alongside breast or bottle feeds, so you can see the full picture of your baby's nutrition. Tracking sleep continues to matter — 6-month-olds often have 2 naps a day, and their night sleep is more consolidated, but tracking helps you spot regressions or illness-related disruptions early.

This article is for general guidance and does not replace your doctor's advice. For advice on starting solids, allergies, or developmental concerns, consult your pediatrician.

Track feeds, solids and sleep with Bebblo

As you introduce solid foods, Bebblo helps you track every feed — breast, bottle, and solids — alongside sleep and nappies. Free, offline, no account needed.