BP don’t hibernate.

83 as for the all enclosure is 83?

Not sure how you measure your temps but you need an accurate digital thermometer measuring the temp at the bottom of the enclosure.

Not sure how you provide heat but best is to provide belly heat

BP needs gradiant temp 80-84 on the cool side and 90-94 on the warm side and often going off feed comes from husbandary issues.

Humidity should be between 50%-60%

How often do you clean his enclosure? Scale rot is often the result of high humidity damp substrate or filthy enclosure.

Either way you need to make an appointment to an herp vet another one http://www.arav.org/USMembers.htm

Right now you need to replace your substrate by some paper towel get the temperature up and proper as mentioned above and reduce the humidity level

What you can do while waiting for an appointment is to clean up the with betadine and then apply anti-bacterial ointment (Make sure it does not contain pain killer)