I am going away for the night (it's our anniversary). I will only be gone one night, and I have been pumping and storing up; my lo does take a bottle fine, but it has been awhile since I have given him one. Any ideas how much he should take at each feeding? He is almost 3 months, about 13 lbs. He was taking about 3 ounces per feeding in the past, should it be about the same? Also, I am planning on pumping while I am away, any idea how long I can go without affecting my supply?