Lopsided breast milk production

I'm only 3 days PP but pumping every three hours on both breasts at the same time. My baby boy is a premie so he doesn't have a strong latch, I pump and he gets the bottle. We're still working with him to latch on the breast but so far not much luck. Anyway, the last several pumpings my left boob is giving anywhere from 20-25ml and my right boob somewhere around 10ml.. I've been trying to alternate sides when I work with him on latching.. is there a way to get my right boob to catch back up on production?