I'm a nurse too! But I work full time doing phone triage in a family practice clinic. I have enough milk when she nurses but am having trouble with the pump - there is another thread all about it. I think of all the times I was bordering on engorged and hand-expressed into a towel because I didn't want to overstimulate my supply - now I wish I had pumped some of that extra. It sounds like you must have a good freezer stash started though if you are filling a bottle from one boob. I only block fed for two days but I wish I had just taken advantage of the oversupply instead.