How long does it take to ween off oxy.......?

how long does it take to ween off oxycodone? i was takeing 4-5 aday for back pain,i guess its been 3 mos i want to taper off what should i do?? im sick and i sweat and my body aches ,around 3 or 4 pm for the last 3 days ive taperd all the way down to 1 a day at that time i can get out of bed get a bath ,food tea, and do some lite housework today i took 1 at 3pm and 10.00pm i took a half am i doing better? tomorrow ill take one then the next day do a half untill im down to none maby do this all of next week next friday i should be done weening what do you think? im so sick...........when will it be over>??????ugggggghhhhh