What happens if he goes in socks or bare foot for a day or 2 staying off the foot most of the time, does it get any good healing done in that time frame?

With the sore spot bandaged/dressed of course, but no shoes or slippers..
Maybe the shoes or slippers aren't fitting well and causing continuous irritations/rubbing??
also holding in excess moisture too, maybe some fresh air and even sunlight might help it.