How long does premature baby eat premature milk powder

Premature infants generally need to drink premature milk powder for 1 to 2 months, but not all premature infants need to drink premature milk powder for 1 to 2 months. How long premature infants eat premature milk powder depends mainly on the growth of premature infants. Generally, premature infants can be changed to ordinary milk powder when their weight is equal to that of full-term babies in the same month.