... day. My dr. has put me on 20mg oxycontin 2x a day for about 6weeks. I am now on 5th week and I realized that at times because I was taking it every 10 hrs. I was actually taking 3 a day sometimes. This last week and half has been the hardest to get through so far. I have been feeling pretty good except for severe withdrawals at the beginning..why getting so shaky now between doses..need it about every 7 hours..am scared for last 2 days since I will run short from the times I took 3 a day..I am 62 years old and getting scared I wont be able to taper. He is going to lower my dose to 15mg 2x a day.