If nursing seems to be ok so far, I would suggest pumping after baby eats in the morning and begin storing that. Also, you could try pumping one side while baby nurses on the other. I'd be careful to overdo it, however. Your milk supply is just now being established -- you don't want to pump too often throughout the day in addition to your baby nursing throughout the day where you either 1.) increase your supply so drastically that once you are away from baby you find yourself engorged and in pain and 2.) you pump too much where baby might feel frustrating nursing if he/she is having to work pretty hard to get another let down (in case he/she begins to get hungry again right after nursing, which is fairly common). Be prepared to possibly have difficulties getting a large amount -- pumps are different than a baby and some women react differently to them (in terms of amount pumped). Good luck!