That lasts for up to a week and then you are through. You should find a quiet week and suffer through once just to prove to yourself you can and to decide whether to consume agaib clean
Or just taper. It is quite simple with caffeine for most people. Takes a few weeks. Just reduce consumption by 10-15% every 2-3 days. Symptoms should be much more manageable. I am at 2-3 cups of coffee per day. Maybe a diet red bull. If I stop outright I rarely even notice other than feeling a little slow that day. I am fine with that.