The first three months of life are all about sensory and motor development. During this period, babies typically:
- Physical milestones: Lift their heads during tummy time, track objects with their eyes, and begin grasping objects.
 - Cognitive milestones: Recognize familiar faces and respond to voices.
 - Social milestones: Smile socially around 6-8 weeks, signaling early emotional connections.
 
These early months are foundational for growth, as babies start exploring their world and forming strong bonds with caregivers.