good luck, I came off a much higher dose than that a bit over 30 months ago. while I do have valid pain issues my dr was prescribing me some strong strong stuff, a mix between long acting and short acting. I was always good with the long acting but the short acting (15 mg oxys) said I could take 1-3 3xdaily as needed on the bottle..
hang in there. the first days were not the hardest for me on that ride down, and it ended up putting me over the edge and down the alcohol rabbit hole like I'd never been before (I've drank everyday for 20 years so it's not like it caused my alcoholism..)