I put the milk in the freezer in which I put other frozen food also. Cannot afford to buy an isolated freezer. Just ask my maid/family member to close the door tightly and minimize the no. of time for opening the door.
yuengooluk,
Don't worry. We usually have the wrong concept that expressing more milk will decrease the supply. Actually, it is the other way round. The more you express , the more milk your body will generate.
Feeding and pumping at the same time can help expressing more milk as there is reflex action (反射作用). When you are feeding, your body will continue generate milk.
Drink more water/soup and juice before and after feeding and pumping to provide more fluid for milk making