Hi everyone. I'm a long time lurker, first time poster. I have a 1.5 yr old bts named Alister who I'm worried about. A couple of months ago he had a very dry shed in which his feet ended up bloody and he lost a couple of toes.

I put him on plain paper towel while he healed (he's usually on aspen) and put Polysporin (without lidocaine) on his toes. He seemed okay for a while after, but during his next shed his toes turned slightly bloody again. I'm really worried and am wondering if this will eventually stop? Should I change his substrate? Does anyone have experience/advice with this kind of situation?

this is when he was still healing

this is a picture I took just now

this is another one of his other foot, which looks worse