Fluoxetine (Prozac) is meant to be the easiest AD to come off as it has such a long half life, I think?
Years ago when I had PND I spent nearly 3 years on ADs (Amitriptyline followed by Sertraline). When I decided I wanted to come off them my GP switched me to Prozac as it's easier to withdraw off. I took it for about 6 weeks but didn't like how it made me feel so just went cold turkey off.
I didn't have any side effects whatsoever but I think I was maybe lucky?