hey man. I'm sure you're pretty scared about the whole thing. You can get through it if you want to. It will suck bad but only for a certain period of time.
Tapering off oxy, while a good idea in theory, is tough to execute because you will feel pretty crappy even during the taper, which will in turn cause you to want to take more. If that happens then the tapers gone. If you really think you can taper successfully I would aim for a week long... any more would be spreading your drugs too thin...
In your case (60 mg/day for 8 months), cold-turkey would definitely suck but you are in such a better spot compared to most of the people I run into. So be thankful you haven't been crushing 4x that amount for 4x as long!
If you can't bear to cold turkey, my advice is to try and taper over a week. Get Immodium (Loperamide, an anti-diarrheal) at least 2x the recommended dose to ease your GI discomfort, which will exist for most of the withdrawal.
You will experience the typical psychological torment of opiate withdrawal... high-level anxiety and depression, boredom, feeling worthless. You have to do whatever you can to ignore this and concentrate on nothing else but finishing the day.
The other problem is you will have a terrible time trying to sleep. This was true for me and for the majority of people who've shared experiences with me. For OTC, take melatonin and doxylamine to give yourself a fighting chance. However, it may be in your best interest to obtain a benzo and/or hypnotic prescription drug. You WILL be terribly anxious and sleepless, so its not like you'd be lying to the doc. But please understand these are for the short term only....if you start screwing around then they will only replace your opiate addiction.
I cannot emphasize enough how helpful it will be to exercise. Going through withdrawal with and without exercise is like night and day. You will not have fun doing it, but its a hell of a lot better than going without it, trust me. Plus it can be huge in helping you sleep. Long, hot showers were a favorite treatment of mine too.
My habit was a bit heavier than yours but only lasted about 2 months the first time. I cold turkeyed off and had the 10 most miserable days of my life, but I kept on telling myself that it would end... and it did.
When it was over, I wasn't quite back to 100% but I would still describe the feeling as beautiful. You can get there man, just mark the days. It could take 14 days before you improve a lot, but every day is easier after the first few. You will feel horrendous but don't give up. Get rid of that monster and never look back. Take your life back brother!!!!