I have been on Xanax 1 mg for 6 years I want to ween off and I don't know how. I have PTSD and agoraphobia and OCD and GAD and I am now taking 20 mg Lexapro and 15 mg busbar twice a day I take 1 mg Xanax 3 times a day please help I don't want to have any bad side effects PTSD is bad enough