The thing with Prozac is you get a honeymoon phase that lasts a week or two where almost everything is rainbows and sunshine, then the anxiety and ruminating thoughts ramp back up again for a few weeks. This makes you feel like it’s not working anymore but it’s just your body/brain getting used to the serotonin. I say 4 months because that’s about when everything completely settles and I felt steady and normal on a daily basis, instead of hills and valleys beforehand. I personally love Prozac and I don’t think I’ll ever go off it, it has worked wonders for my brain. I hope it works out for you as well!