How long do the headaches last?😫

I quit caffeine 2 weeks ago. I was having one latte a morning, and an occasional latte in the afternoon (maybe once a week) As I quit, I tapered my intake down, but only over the course of a week so I’ve still had some strong withdrawal symptoms. My main concern is headaches. I’ve had a 24/7 headache that’s moderate to severe for going on 2 weeks. How long did it take for you to have relief after quitting?