One last question--I promise!
My four-month-old is still not super predictable in his eating or sleeping patterns. During the day, he usually eats about every two hours. At night, he sometimes wakes and wants to eat (though he usually falls asleep as soon as I put him on the breast, so what he REALLY wants is probably comfort nursing). When I'm with him, he eats exclusively from the breast. When I'm at work, he gets a bottle. I'm working on increasing my supply at least a little bit, because right now I'm barely keeping up with him (I have to pump five times to equal three of his feedings, and I have to pump at night to get the amount of milk that he eats in a day).
On weekends when I'm home with him, and during the night, he often wants to eat right after I've pumped. I try my best to avoid this, but it's often inevitable. (Try staying up for three hours at night because he keeps waking and wanting to eat and dozing right off, then waking again as soon as you try to get up to pump--it's no fun.)
I know the baby empties the breast more effectively than the pump, but the pump does a pretty good job, it seems. If I have to feed him any time within about an hour to an hour and a half after I've pumped (sometimes even two hours), he twists and fidgets and whines because he's not getting much milk at all. (I can feel my let-downs, and know that it's not happening soon after I pump. Also, his tongue isn't milky at all, even after hours of these nursing sessions.)
When I pump right after I feed him, I get virtually no milk--about 1/2 oz total--which doesn't so much work for putting more milk in the fridge or freezer, so this isn't the best plan.
Like I said, I'm trying to build my supply and my currently pathetic freezer stash. I want to pump as much as I can in order to do this. BUT I don't want to starve my baby. How do I balance these two things? Can I pump even if it's not right after he's eaten, without worrying about starving him? How many times a day is it normal to pump if you're also feeding the baby for every feeding, and how much should I worry when he seems unsatisfied?