In extreme cases, the baby will refuse to return to the breast, and the mother finds it necessary to either supplement or wean. 11.5 oz but grew in length 2. This is not me by the way. It is very important to be sure that the containers and pumps are as sterile as possible before storage. It's best to freeze 2 to 4 ounces at a time, as the baby is unlikely to use much more than that initially.
Pumps are very individual.
Double pumps are regarded as the most efficient, but again, this is an individual choice, based on the mother's needs at the time. It is vital to be sure that the storage temp is adequately cold, so that spoilage doesn't occur, and also that the containers are dated to ensure that the milk is used within the correct amount of time. I've heard conflicting comments about this, especially since nipple stimulation can start labor in some women. Sometimes it is recommended to rub them with a rough towel, but it's my belief that exposure to the air is adequate. Just wearing a cotton t-shirt without a bra will be beneficial in preparing the nipples.