This doesn't make sense. Caffeine has a half time of 4 hrs (3-7 according to this source [1] but lets assume 4 for the sake of argument). So if you consume a cup, in 4 hours, you got 50% of caffeine remaining. If you then drink another cup, you go from 0,5 to 1,5 and after 4 more hours you are on 0,75 which is 75% of your first dose. We're then 8 hours in the day. 12 hours into the day you're on 0,375 and at that point you're winding down.
If you'd drink one week a month decaf (assuming you can enjoy the taste. I dislike it) you get caffeine withdrawal the first day, and the other days you don't. But as soon as you start consuming coffee again, you also get withdrawal symptoms because the half time is ~4 hours.
The way I deal with it which is the correct way is limit coffee intake to 2-3 cups a day in the morning/afternoon. None in the evening because it will cause sleep deprivation.
