6-Month Baby Development: Rolling, Starting Solids, Stranger Anxiety

Published: 2025-08-20Last Reviewed: 2025-08-20BebeSnap Parenting Team3min read

6 months is a crucial time in baby development. Solid foods begin, movement increases, and babies start learning to communicate with the world.

Physical Development

Weight and Length

  • Weight: About 2.5x birth weight (avg 15-18 lbs)
  • Length: About 25-27 inches
  • Head circumference: About 17 inches

Motor Development

Rolling Mastered Most babies roll freely in both directions. Some may start army crawling.

Starting to Sit

  • Sitting briefly with support (hands on floor)
  • Still unstable, needs cushions
  • Trying to keep back straight

Hand Use

  • Transferring objects between hands
  • Intentional grasping
  • Exploring objects with mouth

Starting Solids

Readiness Signs

At 6 months, solid foods begin. Signs of readiness:

  • Good head control
  • Can sit with support in high chair
  • Shows interest in adult food
  • Doesn't push food out with tongue

First Foods

Starting Foods

  • Rice cereal or rice porridge
  • Sweet potato, potato, squash puree
  • Gentle fruits like apple, banana

Important Tips

  • Try one food at a time
  • Wait 3-5 days between new foods
  • Watch for allergic reactions (rash, diarrhea, vomiting)

Continuing Milk

Even with solids, breast milk or formula is still the main food. Solids are just practice.

Cognitive Development

Cause and Effect

  • Understanding that pressing buttons makes sounds
  • Learning that dropping toys means parent picks them up
  • Connecting actions with results

Object Permanence

  • Tries to find toys under blankets
  • Genuinely enjoys peek-a-boo
  • Beginning to understand things still exist when hidden

Sounds and Language

  • Varied babbling (mamama, bababa)
  • Starting to respond to own name
  • Different sounds for different emotions

Social Development

Stranger Anxiety Begins

Stranger anxiety may start around 6 months.

  • Cries or clings to mom when seeing strangers
  • This is normal development
  • Don't force baby to go to others

Emotional Expression

  • Expresses joy, anger, sadness
  • Laughs at reflection in mirror
  • Plays alone but looks for mom

Social Interaction

  • Starts give-and-take play with toys
  • Imitates facial expressions
  • Laughs when you laugh

Play Ideas

Exploration Play

Let baby touch and explore safe objects.

  • Various textures (soft, rough)
  • Different sizes and shapes
  • Sound-making toys

Peek-a-Boo

Great for cognitive development. Try different ways:

  • Cover face with hands
  • Hide toys under blankets
  • Pop out from behind door

Songs and Movement

  • Clapping while singing
  • Swaying to music
  • Action songs

Reading Books

  • Thick board books
  • Bold, clear pictures
  • Onomatopoeia

Warning Signs

Consult pediatrician if:

  • Cannot roll at all
  • Cannot hold head up
  • No response to sounds
  • Avoids eye contact
  • Doesn't reach for objects

Frequently Asked Questions

Q: 6 months but can't sit yet

Sitting alone typically develops between 6-8 months. Not sitting unsupported yet is normal.

Q: No teeth yet

Teeth can appear anytime between 4-12 months. Late teeth are fine.

Q: Waking a lot at night

Sleep regression can happen. Big developmental changes can temporarily disrupt sleep patterns.

Q: Refusing solids

Refusal at first is normal. Don't force it - keep trying slowly and patiently.

Track 6-Month Milestones with BebeSnap

Record important developmental moments:

  • First solid food date and reaction
  • Sitting success moment
  • First name response
  • Save growth records with photos

References

6-Month Baby Development: Rolling, Starting Solids, Stranger Anxiety

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