If your over the w/d from the oxy's,I would try to go ahead and taper off the sub. It will only get harder to come off of the longer your on it, I would think. Yea,those oxy's are tough to come off of. I was addicted to dilaudid before the methadone and they were very costly too. just wish I would've tried to kick those instead of the methadone. That was just another addiction,along with the Xanax. I mean why not just go ahead and do your d-o-c (drug of choice) if you're gonna continue getting high by abusing and mixing it with xanax? That's exactly what I was doing so I got worse instead of better. Good luck to you. Do you have any king of support system to help you?