All of the above sounds like good advice and I couldn't give you better; I mean you 're supposed to use methadone to get you off the junk, but I've been known to use junk to get me off methadone. XD
What I wanna know and want you to think about though is, once you've put yourself through the process of coming off the methadone, what the fuck d'ya wanna go back onto ANOTHER substitution drug for??
... Like really what is the actual point ? Your body gets habituated to an opiate, yes, and integrates it into the metabolic function, and will react when you withdraw it ; but it's not as though your body needs an opiate the way a diabetic NEEDS insulin.
It's not replacing some vital function that the body can't do without. The body will readjust to its normal state.
You don't talk as though you're still craving a high from it. And the only two sensible reasons I can see for taking any opiate is either for medical pain relief or for personal pleasure. If it's not either then just detox off the damn methadone and get on with your life FFS!
Why shackle yourself indefinitely to a purposefully maintained physical dependence when this provides no pleasure and relieves no physical issue? Why complicate your life that way? This makes no sense to me. Unless you've formed some psychological attachment to the idea of being a patient who constantly needs to be on SOMETHING.