Opiate detox in jail is THE worst thing I have ever had to go through in my life. And Ive had to do it 3 times, it never get s any easier. IF you even think you might have to go, I would advise you detox yourself and chill for about 2 weeks prior to going, because you do not want to go through that in jail.
I too am facing time, again, have to go to court 2 days before Christmas, but Ive been sober for a couple months now, so the detox thing wont be as much of a problem. I dont know how bad drying up on suboxone is, but it cant be as bad as coing off of methadone and fentanyl. Best wishes