You don’t need to switch from breastmilk to formula if you have been breastfeeding all the time with an occasional meal. Switching is when a baby switches from one type of formula to another. If the baby has been breastfed all the time and only adds formula milk occasionally, then there is no need to transfer milk. In the infant before the age of one year should not be frequent milk transfer, milk transfer should be carried out in the baby’s body in a state of complete health, there is diarrhea, fever, colds, etc., do not transfer milk during the vaccination period, milk transfer at the same time do not add a new complementary food, so as not to give the baby stomach to increase the burden. Breastmilk is rich in nutrients, and the proportion is appropriate and easy to digest and absorb, containing high quality protein, essential amino acids and lactose is more conducive to the development of infants. If breastmilk is sufficient, you can continue breastfeeding.