For the past week or so my baby has switched to eating only 1 breast a feeding, and my supply hasn't increased according to my pumping volumes. If I try I give him the other breast, he gets really fussy. He stops rooting so I assume he's full. He also falls asleep a lot when feeding. If I keep him awake, he stays awake for 10 hrs and doesn't nap, so I just let him sleep.