Consider also partially replacing the substrate to 100% cypress mulch. There has been anecdotal evidence and reports on the impact that 100% cypress mulch has on poorly feeding ball pythons. Coupled with all the other recommendations the substrate plays an important part in ball python feeding. East Coast Reptiles some years ago put out an article that outlined their studies and research into the issues of non feeding and poorly, inconsistent feedings in several different ball pythons. I believe this article was in Justin Kobylka’s Ball street Journal. They highlighted the successes that were brought about by instilling 100% cypress mulch into the enclosures of several animals. If I can pull it up from the archives I will post it. Good luck and pts can be placed on hold.