Exclusively pumping at 3 weeks

I️ had an emergency c-section with multiple infections and complications PP unfortunately. I️ switched to almost exclusively pumping due to my daughter never getting enough (even after 3 hour feedings) and my flat nipples/nipple shield usage.

I️ had planned on breastfeeding; however I’d like my daughter fed and content no matter what that does to my expectations.

The issue I’m having right now is that my 3 week old seems to want up to 5-6 ounces of my expressed breast milk at a feeding. She will cluster feed at times and want less but either way my supply is healthy but just not quite able to keep up (I️ can pump 30 oz a day). I️ initially had an oversupply at the hospital but it almost seems like my commitment to nursing initially drained my supply. Has anyone experienced this or have any suggestions? At this point I’d love to get my initial oversupply back but don’t know if that’s possible... pumping every 2 hours actually seemed to decrease my supply recently.