Any tips for keeping my baby awake during feedings?

I feel your pain! I have a 4 week old little boy. He does the same thing he falls asleep especially at night. It is hardest to deal with in the middle of the night when all you want to do is get it over with so you can sleep. I have found that during the day if I pump after he is done with his feedings then I will build up enough that I can use that during the nights. My baby only seems to fall asleep when he is feeding. Good luck and don't worry you are not alone. Hopefully we will both get some sleep soon :)