Supply decreased

Idk if it’s because my daughter will be 1 next month so it’s happening naturally, or because I went through a couple weeks of extreme stress (finishing up grad school) but I pump about 1oz total every 6-8hrs. I don’t want to stop yet :( anything I can do to increase supply or is this destined to happen??

I exclusively pump by the way so this is the only way my daughter gets breast milk. I was pumping more often with less time in between, but if I do that now, I’ll just get a few drops so it’s not even worth it