You know, the same way one might forget to eat food. I keep a bottle of migraine zappers for this exact occasion when I wake up in the middle of the night with my head exploding and I’m like “oh. right. I’m dependant on a substance. nice fumble, dweeb”
Can’t say I have. It takes 2-3 days for my withdrawals to kick in and they don’t show up as intense as yours. And I’d say I’m quite sensitive to caffeine.
It’s more like a severe cold for me, no headaches.