← Infant · Development & Milestones
Infant · Development & Milestones
Development & Milestones for the Infant stage (3 – 12 mo).
6 guides in this cell
— Reading list
All Development & Milestones guides for Infant
How to Help Your Baby Learn to Sit Up on Their Own
Most babies sit unsupported between 4 and 7 months, but you can actively speed that process along with daily tummy time, targeted play positions, and...
9 Months to 1 Year: Your Baby's Development Milestones Explained
Between 9 and 12 months, your baby progresses through some of the fastest developmental changes of their entire childhood, spanning mobility, language...
Physical Development: Building the Strength to Explore
Between 2 and 3 months, your baby makes some of the fastest developmental leaps of their entire life — from holding their head steady to flashing thei...
Physical Development: Rolling, Reaching, and Building Core Strength
Between 4 and 6 months, your baby undergoes some of the fastest developmental change of their entire life — across physical, cognitive, social, and la...
Physical Development: From Sitter to Mover
Between 7 and 9 months, your baby moves through one of the most dramatic developmental leaps of their first year — gaining mobility, deepening emotion...
The Science Behind Tummy Time: Why Position Is Everything
Tummy time is the single most effective daily habit you can build for your infant's physical and cognitive development — strengthening neck and core m...