I've tapered off it in the past without problems that I remember (so nothing too bad). I also came off cold turkey when I developed the rash and that wasn't too terrible either. I don't remember what dose I was on either time although the first time it was fairly high. I think 300-350? The 2nd was probably closer to 150 because I'd not been on it terribly long when the rash developed.

I hope it goes well for you.