I Have Been Taken Ritalin For The Past 16 Years

I have been taken ritalin for the past 16 years for narcolepsy, chronic fatigue syndrome, and add. I went to a new doctor 3 years ago, and out of the blue, he wants me to wean of of 90 20m tablets per week, or 2 4 times a day. I was given a prescription for 140 tablets to have me completely weaned off it by the end of the month. When I got an autoimmune disease 16 years ago, i had numerous narcoleptic episodes, I drowned in a hot tub, sitting on a chair at a surgical center waiting for my daughter, I went out like a light, fell flat on my face and broke my facial bones, and nose etc...