Exclusively Pumping / Bottle Feeding

My daughter is almost 2 weeks old - I’m exclusively pumping and notice there’s a huge difference in my supply on both sides. I’ll typically pump 20-25 minutes and get 2-3oz on one side, and about .5 Oz on the other.

It’s so discouraging and I can’t seem to build a supply or even make enough to feed her everyday (even though I’m pumping every 2-3 hours) and we have to supplement with formula.

Any tips or ideas on how to fix this? I’ve tried hot pads before, massaging the breast and changing suction amounts but I can’t figure it out! So frustrating.