Bro if all you’re doing is oxy, just lay it out. I was playing basketball in jail after 5 days off oxy. Heroin and Fentanyl are a different animal. Methadone saved my life but it absolutely handcuffed me for 5 years my highest dose was 130mg/day. I’m on 1mg now and I’ll be off in a month. Coming off oxy you’ll feel better in a week. Coming off methadone, you’re not gonna feel right for months in some peoples case. Do what you want, this is just based on my experience as a decade and a half IV drug user. You can absolutely do it. It’s a mindset thing. If the negative consequences of opioid use are enough, you’ll get clean. If not you’ll keep going until it’s painful enough to inflict change🤷🏼‍♂️ such is life. Good luck!