Dealing with oversupply is an art, not a science. There are no hard and fast rules for how many times you need to offer breast A before you need to offer breast B, or whether you need to always start on A and then move to be, or mostly start on B and only once in a while start on A, etc. You just have to keep experimenting, and reading your baby. If she's seeming happier and struggling less, you're doing the right thing. If not, then maybe you need to change something, try something new. I know that's probably not the precise answer you're looking for!