TLDR: if baby only eats from one side at a feeding, so you pump the other side or just start with that side at the next feeding?

So my little girl is 8 weeks and I have 600(+) ounces of milk in my deep freeze, I pump once sometimes twice a day (in the AM after her feed and sometimes bedtime after her feed) She is fed on demand (never goes longer then 3hrs) but only eats from one side per feeding. She is perfectly healthy and gaining weight very well. So my question is do you pump from the side your baby doesn’t eat if they only eat from one side? I’m finding myself engorged between feedings/leaking. Thank you in advanced!