You need to get down to 30mgs\day of
methadone and be stable before you can successfully switch over to buprenorphene.Buprenorphene has been highly successful in treating minor to moderate opiate addictions.After 30 years on methadone I would think that the buprenorphene may not be strong enough but I'm not a doctor.I would try it though as it has helped thousands of people.Good luck and keep us informed on your progress........Dave