how long hasnt he eaten, balls can go up to 3 months no problem with eating mine went almost 6 months, but the weakness is a result of the RI i know i had a boa that a rescued that had it, very limp no attempt to move or wrap my arm, wouldnt eat anything it cam to the point that i had to force feed him to get energy in him. but the 100 degree temps worked great and has been working with my friends snakes and my girlfriends snakes. if you dont mined spending lots of money then by all means take him but im saying this from a view of me having over 30 balls and 4 jungle carpets so it would cost me a fortune to take them to a vet , besides snakes dont do good anesthetized and there is no medicine for snakes, oh for the red belly you can use a vitamin E but make sure it has no purfum or pain killer in it. that will help heal the redness... oh and like i said iv worked with herp vets and i know what they do. the doctor I worked with took in a big boa with RI and mouth rot the owner left the snake for the doctor to look at and take care of all he did was clean its mouth with watered down paroxide every day twice, and put her in a 55 gallon tank with temps at 95-100 degrees and a big water bowl with cold water that i changed 3 times a day to keep cold spot for her after 5 days she was back to new and the owner was $450 pluse tax in the hole when he could have done it at home and used that money for his electric bill...lol