I have a 2 week old who falls asleep, or at least dozes off, after nursing for only 3-5 minutes. I try to keep her awake, and sucking continuously, but it's difficult! She does suck on and off for at least 10 minutes on each side, but isn't gaining as much weight as our pediatrician would like. We have another weight check appointment with the doctor this Tuesday, and if she hasn't gained enough, I'm afraid they will ask me to supplement with formula again. (Something I had to do in her first week of life because my milk didn't come in until day 6.)
Is she not getting enought hindmilk? What can I do to make sure she gets a full nursing of both foremilk and hindmilk? Her latch is great - no problems there.
Also - she does nurse (on average) every 1 1/2 to 2 hours, and has about 6 wet diapers per day and 4-6 BMs (though small ones) per day.