I live in Canada so none of the stores stock Provent-a-mite here. My best bet is probably the reptile expo coming up in a few days as someone told me that someone sells it there.

The wheezing has stopped. It was just from this morning because of the dry skin he was about to shed. Regardless, still going to bring him to the vet tomorrow for the prolapse. I mixed some sugar solution to put on it for now. 90% of it has retracted back inside (thank goodness) but some of it is still hanging out.