I once counseled an old guy who was on some sort of benzo for 10 years and also addiction to alcohol.
It varies from person to person but he had a rough ride and was given a 2 weeks taper, on week 10 it got too much so he took off, I remember how frightened and antisocial he was...
I really felt his pain.
Some go through a tough time but to others it can be quite bearable.
Lets hope to are the latter.
Don't give up, they will keep you monitored on the outside more so in most of the treatment centres where you have heroin addicts crawling the walls.
If it's not working speak up and tell them they will increase the taper.