I started Prozac 3 weeks ago and have been taking .25 mg of xanax at night to help with sleep. I was very restless and had a lot of anxiety trying to go to sleep. The xanax helped. Now I want to try to quit the xanax. Since it has only been 3 weeks should I taper (break in half) or not? How long should I do this? Any advice. I don't want my nighttime anxiety to come back.