My three week old drinks well, I have a fast let down so he drinks fast. He is fed on demand, and takes a few goes at each feed.. Can be quite gassy from taking in air with the fast flow, but doesn't seen to stay on long. He does snack feed,, I also remember my girls did this. Just not sure if he's getting enough hind creamy milk if he feeds fsst...he's piling on the pounds though. Was born 8lb14, then jumped to 9lb within days, then 9lb 11 and a week on and I think he'll be over 10lb now
Just wondered as he doesn't stay on long and seems fussy after feeds sometimes