Breastfeeding advice

I'm 2 weeks pp and having supply issues. I'm currently expressing as my baby won't maintain latch with the left and created a deep cut on the right in the first two days so I'm trying to allow it to heal. I exclusively pumped with my first baby for 8 months (until she one day just latched) and had amazing supply the whole time. I've been pumping every 2-3hrs and my supply has dropped to 1oz on my right side which is stressing me out. Could a scab on this side block milk flow? I've just started taking fenugreek and have ordered some lactation biscuits. Does anyone have any other tips?