I was on Prozac for four years 20-30 mg. Last year I decided to wean off very slowly. I had been off for over three months when some major stress came into my life. The stress happened to come as winter was approaching, and the combination of stress and dark days put me in a depression.
I felt that I should go back on Prozac, but my prescription had run out. Ended up on Lexapro, which is okay. Someday again, when things are more under control, I may try to wean off of this med.
Since I weaned off so slowly of the Prozac, I never really felt any withdrawl symptoms. It has a long half life, so it is easier to come off of than others.
Good luck to you!