I am extremely sensitive to valium. This works in my favor when manic but is also difficult because a small dose knocks me out more than necessary. A few years ago we tried using liquid valium to find a more specific dose. I read that a lot of people taper off valium with the liquid, reducing a milliliter at a time. I don't know if xanax comes in a liquid but if it does it might be a way to taper with very small changes so it's not so hard on you.