Losing supply or supply regulating?

Mikayla

Probably a stupid question, FTM here. My baby is 3 weeks old, I breastfeed and pump so my husband can give him bottles! My pumping sessions I used to get about 5 ounces per boob. Now it’s dropped down to 3.5-4 ounces per side (I know this isn’t a huge amount it’s dropped). Is this my supply regulating or am I going to keep dropping in supply?! This has made me so anxious that I won’t be able to breastfeed!