Dude man, I can relate. I went on methadone for pain management 17 years ago at age 45. 100 mgs daily for 17 fuckin years. I'm now age 62 & the last time I went to the pain clinic (June 22), I was told the feds were cracking down on high doses of pain meds...right after that dipshit Prince OD'd & sent the Rx's for pain into a tail-spin. Feds told the doctors to lower everyone or face a license revocation. I had been getting 3 months worth of Rx's at a time...300/10 mg pills monthly. In June, I was given 3 months' worth, but it went from 300 to 240 to 180 to 90. I knew then & there that I will no longer be a puppet for my pills & needed to do a taper.
Normally, especially after 17 yrs, you're supposed to be tapered at 1-2 mgs weekly = 1-2 years!! I had to do a 2 yr taper in 90 days. Fuckin brutal...3 months of sheer hell. Methadone has such a long 1/2 life, it takes forever to get outta your system. 1/2 life on morphine? 5 hours. Methadone 1/2 life = 1-2 WEEKS! Every other narcotic is like 5-7 day withdrawal. I'm on day 37 & am about 75% well. Each day gets easier, but I've heard others who've kicked methadone on less time & a lesser dose take up to 3-6 MONTHS before they're back to 100%.
My advice is to start a taper when you go back Friday. Weed helps tremendously, which I've been tokin for 47 yrs & have never had 1 problem with. I'll go a week or 2 without smoking & it doesn't pull at me in the least. In fact, at my age, I'm experiencing 'reverse tolerance'. I only need a couple hits & am blasted.
Anyway man...my only advice is to get off that shit ASAP. The doctors / feds call the shots & they don't give a rat's ass about any 1 of us. You gotta take control of your situation & not let these dickhead doctors string you along only to cut you off. I wish you the best of luck & it is do-able...but stock up on weed, get ready for a walk thru hell...but once you come out the other side, you'll be glad you took that walk. You can do it dude. If I could kick a 17 yr addiction of 100 mgs a day at age 62...you can too. If you need to talk, I'll keep an eye on your thread. Start soon, as who knows what's in store down the road. I still only get like 4-5 hrs of sleep & feel exhausted. I figure by 2017, I should be feeling much better. The hard part is the 1st step = stopping...just make sure you taper, as cold turkey off methadone is horrible. Maybe you can tell the clinic someone stole your doses & need something until Friday. My best to you.