Right before my snakes shed their eyes go back to normal and their skin doesn't look too faded. Just wait it out. YOur snake is at the last stage of the shed. As for feeding some of mine will eat during a shed and some won't My advise is stick to your feeding schedule. If you feed one a week only offer food once a week. If they don't take it wait another week etc.

Now for your mites I do not know. I have never dealt with mites (Knock on wood). Hopefully someone else will chime in on that.