I have one boob that is just slacking - is there anything I can do to help it boost milk production?

I should mention that I do breastfeed as well as pump. And the superstar boob my baby latches onto easily (unlike the lazy boob), will get a good meal, and then I could easily get 6+ oz out of it from pumping after the feeding (my baby is 14 days old today). The lazy boob, however, I’m lucky if I can get 6oz out of it without a feeding. Most of the time I get roughly 3 or 4 oz out of it - which right now is only about one feeding for my baby.

I know it’s still quite soon, and he gets a meal out of it, but when you’re trying to build a supply this lady isn’t helping out much!