Hi [...]
How are you doing on the Xanax? Do you have problems with interdose withdrawals? How many times a day are you dosing?
If you are doing ok on the Xanax (no major interdose withdrawal problems) then I’d stick to tapering the Xanax.
If you are having issues, then you do have the option of crossing to a longer half life benzo following the Ashton Manual slow crossover Schedule, not a direct switch. I not familiar with Librium, but there are those who have faired well crossing to Librium. I crossed to Valium from Klonopin and although it was a difficult (painful) direct switch, there are still those who have difficulty crossing to Valium using a slow crossover, whereas others have no trouble at all. There’s just no way to guarantee how your crossover will be, which is why you would only consider crossing from the Xanax if you really were having significant issues with your Xanax dosing and interdose withdrawals.