is it normal that my little girl seems to vary in the amount that she eats? all week she ate for almost 45 minutes at each feeding and was wanting to eat every two hours. starting yesterday afternoon she starting sleeping almost constantly and i had to wake her up to feed her every 3 hours (per doc's orders to help with jaundice...he wants her to eat every 3 hours at least). she also been nursing for only 20 minutes...10 on each breast...and i have to coax her to stay on that long. i am worried she isn't getting enough to eat. or that i am not producing enough milk because i did start pumping two days ago after each feeding to build up a store of breasmilk. thanks!