There are many alternatives to get what you need pain wise. Methadone is one route with pros and cons.
Pros: no precipitated withdrawal between your last dose of oxy or after (so if it doesn't do the trick, try alone, if pain is still there take both along side with oxy, (if dox lets you) or if you change your mind and say you'd rather be on oxy after you tried dones without extreme precipitated withdrawal.
Cons: it's the WORST to come off of. I spent 3 weeks in jail in solitary next to someone who dosed methadone before she was picked up and she WAILED in pain, wouldn't eat, diarrhea, sweats...she BEGGED God to help her or kill her to end the pain. I was so sad for her experience she was going thru and couldn't do anything. Had I known her before I'd tell her don't get on that, get on subtext. (WAY different from Suboxone because no naloxone-thats what mainly causes those excruciating precipitated wd)
Suboxone pros: can use sooner after last dose of oxy. Still wait 1-5 days depending on how long you've been one it/what mg daily. Moderately*** helps with pain. No narcan in it so if you say no, not for me, wait a day or 2 and get back on oxy.
Cons: withdrawals are not as bad as methadone but the mild wd lasts longer. Isn't noticeable til about 3-10 days, but can last a few weeks if going cold turkey using nothing.
Best option imo, look into new kratom concentrate chewable pills that are called something like
*7-hydroxy. (It's a long name but you'll find it if you Google that). They act the same as opiates latching to those receptors similar to morphine/oxy and are extremely fast acting. I take 2 pills at a time that are 15mg per tablet. I prefer the 7tabs brand or perks. The blue ones don't have caffeine. There are some with it if you prefer energy with it. There are stronger ones I've tried from green/red strand that I feel don't give the same pain relief unless taken with the tabz/perks brand...made me very shaky and hyper which cancels out my pain relief personally.
Cons: haven't found any currently. They get expensive if you take like 4 a day. About 20 bucks a 4 pack of you find a cool corner store or smoke shop. They're legal or you can order on elixyr.com I think.
If you can help it, don't let yourself be a slave to Big pharma. Not only do they f*** up our economy, morality, politics...the greed and carelessness for the consumer they take money from and they ruined those folks lives , and the docs that over prescribed. Jail time, PhD's going down the toilet, fake MRI scans, now we have to squat and cough to get health insurance because it's been made a joke of. I started with oxy, then banned those, put us on Dilaudid starting folks to use needles then took those away, flooded the market with heroin, cracked down on that but replaced it with fentanyl which killed me and my bf from an overdose. I have back pain and for me to get that relief again, get those 7ohms/7tabz/perks things. natural supplements but definitely don't hurt yourself. Go with your gut and I wish you the best! best!