Roberta and Bobbins, I know what you mean.
I tried to feed dd on the fuller breast, in doing so it reduced my milk supply even more on the smaller breast, by then I had really lopsided boobs. Not recommended to do that, as when I looked in the mirror, it looked freaky.
So I tried another approach, by always feeding dd of the smaller breast first then the fuller one. At first, my fuller breast was really engourged even after feeding. So I cupped my breast with my hands and squeezed, to push the milk out, without touching the nipple, otherwise your body will continue to make more milk, because it thinks baby is suckling.
After a few weeks, both breast are not engourged, but not empty. Dd is 9 months now and I'm still b/f her and my left breast still is making much more milk, but at least I don't look too lopsided.
I hope this helps, best of luck with the b/f.