Communication, month by month
3 months
Little sounds, familiar voices
Source window: Birth–3 months. Skills emerge across this range, not on a monthly deadline.
What communication can look like
- Alerts to sounds and turns or looks toward voices.
- Quiets or smiles during talking and makes sounds back and forth.
- Coos with sounds such as ooooo, aahh, and mmmmm.
Everyday examples
ooooo · aahh · mmmmm
Illustrative sounds, words, or phrases—not a required vocabulary list. Welcome gestures, AAC, and home languages too.
A little moment to try
Respond warmly to a sound or look. Pause to leave space for another turn.
Ask Joey AI
A little card to share
Explore cards inspired by the CDC 2-month checkpoint. One card is free; subscriber extras are coming soon.
This is the latest published checkpoint before this month, not a new monthly milestone.
Explore family cardsGrounded in published guidance
Milestone lists describe common skills, not an assessment or diagnosis. AI can be imperfect. For individual concerns, speak with a speech-language pathologist or pediatrician. For adults only; no personal child details or saved conversations.