My son, who is 4 months, is sleeping from about 10pm to about 5 or 6 am. I noticed this morning and acouple of other times that i don't have as much milk as i used to when he would wake up once durring the night. He usually only will nurse from one side and be full, and I will pump the other side and send to the sitters with him. This morning he woke up at about 4 am and nursed and fell back asleep. At 5:30ish I woke up and pumped the other side only to be frustrated. I will usually pump about 4-5oz and this morning was lucky to get 1.5 oz. I want to continue to send a bottle of milk that I pumped that morning with him to the sitters, and a part of me is scared that my milk supply will start to decrease even more. I have this fear because by the time my oldest was 4 months my milk had dried up and he was on formula. I do not want this to happen. should I wake up at about 2 to pump, or not worry about it?