I was never "can't function" level, but stopping caffeine did open my eyes to how much of a fog I was in until the caffeine was dripped in. After a month or so

I was never "can't function" level, but stopping caffeine did open my eyes to how much of a fog I was in until the caffeine was dripped in. After a month or so of no caffeine I started realizing I could just wake up and feel instantly as alert as I normally would an hour or so into my day when taking caffeine. But ultimately it comes down to sleep. Caffeine just masked sleep problems. If I don't sleep well, I still crave it. If I sleep well, I don't think about it anymore.