MOHs wound on shoulder not healing. What's the best way to help it improve?

May 6 I had MOHs surgery on my shoulder, going down two layers to get it all. Due to the location, straps, sleeve seams rub right on the wound. I'm in a cycle, the wound has filled in & it tries to scab over, I raise my arm to do anything, the scab cracks, the bra strap or sleeve seam catches & pulls off the scab, and we start all over. Dermatologist said to keep it bandaged, not to let it dry out and scab. The wound is still red, seeping, sore. How does healing occur if it doesn't scab?