I Rescued a Ball Python from a friend that was in bad shape . Very dehydrated & had snake mites for a few. I have now gotten rid of snake mites and helped gain his energy back some . Somewhat still weak will not strike at prey only will lightly grab and pull away . Why is that & how could I get more energy into him ? Also the stomach of him is very yellowish what could be the cause of that ? & he has bad red blood marks from mites being attached . How would I heal and get rid of them?