How much coffee were you drinking before quitting? 3-6 months seems like a very long time. As far as I know, most withdrawal symptoms should end within 2 weeks, with the most intense symptoms ending within a few days

3-4 cups a day. Was deeply stressed building products with <$100/mo in rev. Couldn't sleep at night from all the caffeine and cortisol spikes.

The ensuing several months were some of the worst in my life (many confounding variables) missing coffee, feeling anhedonic, and inadequately caffeinated/lucid to tackle my problems.