I'm one of those people. When I'm in the habit of drinking coffee, regardless of how much sleep I get, if I miss my scheduled caffeine I get withdrawal symptoms

I'm one of those people. When I'm in the habit of drinking coffee, regardless of how much sleep I get, if I miss my scheduled caffeine I get withdrawal symptoms- sick to my stomach, headaches. I'm currently most of the way through slowly on my caffeine intake, though, and it's been going well- it's just abrupt withdrawal that causes problems.