I have to go back to school on the 11th, and I need advice on how I can stock up a decent supply of milk before doing so. I am going to feed my Son on my lunch break between classes, but since I have never really left him I have no idea how much milk he is going to consume while I am away from him. I just received a loaner pump from the WIC program and the best advice the lady had was "Just add one pumping session in per day." Well, I'm only getting about 4 oz. from that. My son is over 20 pounds and nearing his 4 month mark, and I think he is going through a growth spurt at the moment. I feel like I have no opportunity to pump because he is nursing SO OFTEN. Any advice is welcome! Thank you!