There are limits to how small you can go with a reduction.
Yes, yes, I know for many of my large breasted patients they want them off. Gone. You are done with the whole breast thing. I get that. But there are two basic reasons you can't or shouldn't go super small.
1. Technically, the breast reduction is usually done with a breast pedicle. In English, this means the blood supply to your nipple areola is coming from a chunk of breast tissue. The droopier you are, the bigger and longer the pedicle. You need this to keep the blood supply adequate so your nipple areola lives.
2. Aesthetically. What is a B cup? A C cup? When you talk about size, it is hard to distinguish exactly what size you are currently and what size you want to get to. A B cup is a pretty small breast. I think one basic thing to think about is proportion. When you have been large breasted your entire life, you are used to the proportion that gives. Your belly never has looked large because your breasts are larger. You may really want to be small in the chest. Find photos of the "ideal" size you like. Look at your body. Strap down your breasts in a really tight bra and imagine they are gone. Do you like how you look? My advice is always to err too large, not too small. We could always remove a little with lipo after. It is hard to add some back.