Make sure your pumping if you give formula because that will reduce your supply. But I would try the binky too instead of giving more. He may just want to suck because that is how they comfort themselves. My baby is 6 weeks and eats around 3 to 4oz every 3 to 4 hours. So be careful about over feeding, it will make the baby a little miserable and harder for him to roll over and excersize. Just an fyi
That good news. Lack of sleep makes us all bitchy at times. New baby meansalot of new adjustments for everyone. Getting on a schedule is there hardest part along with accomedating 2different parenting trads. But sound s like you are doing well with it :-) ..
As for the breast milk, it digest faster than formula so they will poop a lot more than formula and it will be kinda runny to yuck lol. And for him being hungry still, I don't think so. I asked my boys dr AMD she said they are getting plenty its just their sucking urge isn't satisfied. My boys don't like binki so it feels like I'm constantly walking around with my boobs popped out. Lol I love breast feeding.. buts wish it wasn't an every hour thing.. guess twins will do that..