I just saw this, otherwise I would have responded sooner. Tacrolimus (aka Protopic) is also what we used to treat Starine for PF. My vet also did not want to go the cyclosporine route until we exhausted all other optins. The Tacrolimus worked for Star, and as I recall, it was about the same time frame as Skye. She healed completely and after I took her off of it several months later, it never came back. It's been six years. In retrospect, the only thing I would have done differently would have been to discontinue it sooner because the black box warning on it came out a few years afterward. I was following my vet's instructions at the time and no one could have anticipated the black box warning which came out while I was using it for my exczema. But I wouldn't be too concerned about it because neither Star or myself have had any long-term side effects.
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Sandy

RATCHX SG Wisp v Schneiden Fels BH RA NAP OJP CAA CGCA TKN TC HIC
SG Chase v Mittelwest BH
SG Flame v Nummer-Eins TKN HIC