1. The timing of baby switching to breast milk. In the first 6 months after birth, breast milk is the best food and can meet the baby\’s nutritional needs. But when the baby grows older and starts to need more nutrients, it is necessary to switch to milk powder. Generally speaking, it is recommended to start adding complementary foods to babies around 6 months old, and gradually switch from breast milk or formula milk to regular milk between 8-12 months old. 2. How to choose milk powder suitable for your baby 1. Choose according to age group: Babies of different ages need different types of milk powder.