Suggest Remedy For Exhaustion And Anxiety

I am 77 years old. Had divorce @ 50. Built a big business. One day I was overcome by anxiety, 10 years ago. I take 2 milligram tablet but I know my system is overmedicated and want to know how long it takes to wean off (I have a psychiatrist) and I have never misused it. I am extremely exhausted, no appetite and dizziness as I take less. How should I go about this. I cannot have a normal life. Thank you for you consideration