I am on a doctor supervised methadone clinic @75 mil

Patient: I am on a doctor supervised methadone clinic @75 mil per day dose, I am having my knee replaced a total left knee on the 7th of April, my question is during my time being home bound they will bring my methadone but is there something I can take or do to get off it during this rehab faze I figure now would be the time but it’s not easy getting off, but it’s liquid handcuffs as well

Doctor: