Does you baby do this too?

my baby is 8 weeks old. ever since he was born only about 4 times has he actually taken himself off my after feeding. every other time he has allen asleep or just ate and ate and ate. it is kind of driving me crazy because most of the time i have to feed him for 2 hours non stop or he cries. it isn't him wanting to comfort suck because he won't take any pacifiers or anything. he seems to be always hungry and he is such a little piglet at 12 pounds. i really don't know what to do with his inconsolable hunger. does anyone have or has anyone had this problem? what have you done about it?