Normal, or low supply? (EP)

MeaganG11

My son was born 12/11 by c-section and I have been an EPer since day 1 due to him being in the NICU for a few days after birth (LO now apparently has nipple confusion or something else where he won't latch or suck at the breast). I pumped for about 3-4 days before getting anything, and experienced engorgement at about day 5 or 6. Days 7-8 I was pumping every 2-3 hours (except at night) and getting almost an ounce at each pumping. However, the past few days, I have been getting less and less at each subsequent pumping and I never feel engorged, even if I go all night without pumping. Yesterday morning I got a full ounce when I pumped when I woke up, and throughout the day at each pumping I got less and less, until last night (last pumped around midnight) I barely got enough to cover the bottom of the bottle (I use Ameda Purely Yours). This morning, I had not pumped all night, and when I pumped, I got even less than I got last night.

Is this normal for an EPer, or am I already "drying up"?