I get why you are nervous about giving up the scale, but I agree with mommal and auderey - I think you are ready to give it up. Think of it this way. If you are breastfeeding from the beginning, without pumping or scales, how do you know whether baby has had enough? Sometimes, you don't. But mostly, you learn your baby. And the simplest answer is, if baby is fussy or moving around or otherwise indicating that he MIGHT be hungry, or if it's been a bit since the last feeding, you offer the breast. And if baby drinks (as he often will), that means milk was the right answer. And if he doesn't, that means something else is going on, and you go through your bag of tricks to see what that might be - or perhaps baby is just being fussy, as sometimes babies are. And you watch diapers and overall weights.
You ARE an experienced mom krystine and you are also an experienced breastfeeding mom! You are doing all the right things. I really think the boys are going to do fine without the scale! And I think you will too once you get used to it.