From what I know Stage Pre formula age is formulated for infants that need a very gentle formula when supplementing breast feeding. ... Stage 2 formula age is formulated for babies whose feeding patterns are beginning to change. Babies at six months are ready to begin eating solid foods but still need formula. You can use stage 1 formula up until your baby is 12 months old. From six months, you can choose stage 2 or follow-on formula, but you don't need to change to stage 2.
Christine Tan