I seem to be able to sleep thru one feed without my supply dwindling. but the one time I slept through two, BOY HOWDY!! It's not that my supply went down -- it's that my breasts were rock-hard and engorged, and I was leaking like one of those crazy sprinklers that spray all over the front yard. I thought the neighborhood cats were going to start following me. I just offered her the breast more often for like a day and things calmed down...

I'm much better at getting to sleep between feeds now, so I'm able to get up for all of them because I'm (knock wood) never at that horrible point of exhaustion.