If your hormone levels are maintained at a typical female level, it seems like Finasteride would stop having an effect. Nothing much to inhibit and all that, just like a cis woman. What I was told was that as long as your testosterone is still being lowered by spiro or whatever, stay on finast, but that it is probably redundant later on. But then no one really seems entirely sure, which is pretty much par for the course with pharmaceuticals.
I'm trying to remember who, one of the other physicians on the forum, said they were on finast despite it not making much sense though. Sort of a can't hurt thing.
Is there a particular reason you are stopping it? (If cost, make sure you are doing the quarter proscar approach rather than propecia. Insanely cheaper.)