I'm sure it's different for everyone, but I can only tolerate a tiny amount of coffee now. Like brewing 6-10 grams of beans, once per morning. But even then, after a month or so, it definitely results in generally low energy, worse sleep etc... And I really don't like how it's the first thing that I MUST do when I wake up.

I ultimately have to detox, which I find takes few weeks. And then I'll feel great for a few months "sober".

But I really do love cofeee - I even roast it myself in small batches. So, I inevitably end up drinking it again and the cycle continues.

Life is definitely better without it.