i think your avatar, is just prefect Cyc; heart braking, but with a smile.
batman is right, they will up and up and up, to outright unnecessary and out ragiously hi doses, "to keep people off the street" - i would bet that's the case half the time... mmt centers, or the manufactures rather have an ingenious concept with this concept, its hard to dispute, but...
in bc, sweden, i know for sure provide on site diactyl morphine, medical grade rather then methadone.
now, batman, you want to do this properly, and utilize the concept of some ' hang time' before leaving this familiariaty. it is noble of you, but, what Cyc has said about the two months, is true. i imagine they are thinking that you are stabilized and panicking for what ever reason.
you didn't mention what you current dose is, or i didn't notice; if you are at a level where 10mgs would be a significant parentage, then they may very well be worried about an interaction, especially if you are on a large dose of benzos.
i have no experience with mmt, but opioids yes, if you can lean off the H, your current baseline of methadone will work... it will suck for a while, but not as bad as now, or before.
if i knew a loop hole, it sounds warranted, as i believe you do want better for your life. i just hope you aren't thinking something along the lines of, "they wouldn't up me, so ill show them" - concisely or not.