let us know if he's feeding. meanwhile try maintaining the humidity at 70+%.
maybe you can put a small wooden log/branch or a rough rock in the enclosure for him to rub the old skin off.
you can use substrates like coco husk and cypress mulch to maintain good humiditiy in the future. i use kritter's crumble (coco husk).
another tip is that humidity will be much easier to maintain in a smaller enclosure (like a tub for example), as moisture does not dissipate easily in smaller space (with less ventilation of course). just be careful to monitor for mold or fungus in the subtrate while keeping high humidity, but a few days won't be a problem.

i hope others with more experience like this can help you out, especially on the one stuck eye cap.
wishing your snake a speedy recovery!