So both of my babies have seemed to prefer Ol lefty from about 3 months of age. I remember close to the end of bf only feeding DS from my left boob as righty gave up.
Dd is 5 months and she prefers lefty too. I try to feed from righty first but I'm conscious of not wrecking the good thing that lefty has going on. I know pumping isn't s true indication, but last night I went out and used a double pump when I got home. In the same time I got 170ml from lefty, only 100ml from poor righty.
Did your baby prefer a boob? What did you do?