It is a good idea to introduce a baby to bottle-feeding a week or two before the mother returns to work. Breast milk storage Breast milk can be kept refrigerated in a clean container for 48 hours or in a freezer for up to 3 months. Be sure to date the container. Breast milk should be thawed in the refrigerator or in a container under warm running water. It should not stand at room temperature to thaw, nor should it be heated on the stove top or in a microwave oven.
Breast milk is all a baby needs for the first months of life.
It is indeed the perfect food. Around the 4th to 6th month of life, however, a baby's prenatal stores of iron become depleted and iron supplements may be needed. Iron can come from a vitamin supplement or from the foods babies eat, such as iron-fortified infant cereal. Also, infants living in cold climates in the winter may need a vitamin D supplement. Talk with your pediatrician about whether your baby needs vitamin or mineral supplements.