head down and tail up, i just had that and its very fustrating, just keep a very close eye, make the tank warmer 80-82 and aireate the tank as much as posable, but cheack that the medications will work in warmer water.
anyway keeping a close eye is the key, dont overlook anyting as when in the healing process a fish i very suseptiable to a secondary infecton.
get a testing kit (is you dont already) cheak that the water is okay, you want as gooder water quality as posable, cheak that the "tail" is not discoloring/spreading discolering, if he gets worse like loss of balance (constant sidways roling, floating when still breathing) then seek advise on what to do next. my result, and i must say my result, i do not say do this unless it is a inivadable death is euthineasure in as nicer way as posable.
hope it works out for you tho good luck, ive got my fingers crosser for you.