For the last 2 days my 3 week old son has been acting like he's starving to death. I can't seem to fill him up. He will eat from my breast but continue to fall asleep but as soon as I put him in his crib he cries for more boobies. I gave him 2.5 ounces of expressed milk and a half hour later he was crying to feed again. He has plenty of wet and dirty diapers but I still worry about my milk because he has a lip tie and doesn't latch the greatest so I'm not sure if he's able to drain my breasts completely. Any thoughts on my situation?