\\It sounds like things are going well Are you just feeling a little overwhelmed by it all?

I can tell you that this is normal. I mean, what would you do if all the sudden your momma's milk dwindled down to pretty much nothing and then suddenly back! You would be sucking it down! She is also just making sure that you will still let her nurse. She is learning to share you AND her boobies.

It is probably a good time to start giving your first daughter some limits. Like a certain chair, only certain times of the day (morning, nap, night), a snack instead, etc. She is old enough to have these. It sounds like you are worried about either of them gaining weight, and that's good. Bf'd babies gain differently. I also did the assigning one boob to my oldest (the first time around) but realized that it didn't matter. I do whatever, whichever now.

I would recommend reading Adventures in Tandem Nursing. You could check your local library or if you have a local LLL group that meets, they may have it in their library.

Good luck and if you want to complain about it, don't hesitate to pm me.