^ 200mg is absurd, and the dose at which heart problems can start (methadone, in large doses, prolongs the QT interval)
Anyway, you could go up to 140mg, sure, though at some point it's on you to focus on other areas of life and let the cravings go naturally - yes, it is difficult, and yes, part of maintenance is reducing cravings, however, methadones high potency, and the massive tolerance you build, make other opioids pretty much useless, at least for the purpose of abuse - That isn't quite coincidence, it is too make it harder to abuse, because moth is going to alter the Users mind overnight, and temptation shall be lurk
Also, 2 days isn't long enough to teach steady state plasma levels, at which point methadone is 1..5-2 x the potency and holds longer
Think about this: 120mg *Chronic * methadone is roughly equivalent to at least ~400mg oxycodone PO,(or 200-300 mg IV), nearly a quarter gram IV morphine (that would be roughly a gram off of non - parenteral. Morphine, or a whopping 1'000mgs) and 30-40 mg IV hydro morphone
Again, up the dose a bit if needed, after that, though, wait it out, I mean longer than a day or two, and try to acclimate, because 200mg+ is massive, would likely make future opioid use difficult, and can prolong the qt interval
Don't take me as wrong, although admittedly I think some clinics get people "stuck " on very high doses where quitting or or even significant dose reduction becomes unfeasible (certainly well past unpleasant) however your life, your choice; if well over 100mgs doesn't or isn't eliminating cravings, then it may simply reduce and not eliminate them for you, personally
Just trying to give reasonable advice, more importantly, perhaps, medical facts regarding potency and the dangers of absurd methadone doses (you should be a good ways from that though, AFAIK) anyway, Luck to ya, hopefully you'll figure it out, find a comfort zone and things shall work out
And yes, have been on MMT myself �� / Lorne