You can introduce solids any time between 4 and 6 months if your baby is ready. Until then, breast milk or formula provides all the calories and nourishment your baby needs and can handle. His digestive system simply isn't ready for solids until he nears his half-birthday.
The American Academy of Pediatrics recommends that babies be breastfed exclusively for at least six (6) months—though parents will attest that some babies are eager and ready to eat solids earlier.
How do I know when my baby's ready?
Your baby will give you clear signs when he's ready to move beyond liquid-only nourishment. Cues to look for include:
How do I introduce solid food?
How do I introduce new food?
How many times a day do I feed my baby solid food?
By around 8 months, feed baby solid food three (3) times a day, during which a typical day's diet might include a combination of: breast milk or iron-fortified formula; iron-fortified cereal; yellow, orange, and green vegetables; fruit; and small amounts of protein such as poultry, lentils, tofu, and meat.