Slacker boob?

Anyone else have this problem? I pumped for 15 minutes and this is what I’ve got. My right side has always made more from the beginning and my baby has always preferred that side. I fixed the problem for a while with supplements but then I had a huge oversupply on my right boob and I was always uncomfortable and spraying milk everywhere. I’m not sure what to do. I know my baby probably gets 1-2 extra nursings in on my right side just because at night that’s how we sleep and now it’s extra bad because she has to go to the right side after each feeding because the left one doesn’t make enough. 😩 Any tips?