I drink maybe 3 cups a day. If I have zero coffee, I have a constant headache in the afternoon which continues for over a week. In the evenings I actually kinda

I drink maybe 3 cups a day. If I have zero coffee, I have a constant headache in the afternoon which continues for over a week. In the evenings I actually kinda feel good, as I just go to sleep. During the day it feels like my brain is trying its hardest to maintain alertness but it is running on fumes. In the evening I just kinda slip into unconsciousness. It's been a multi year goal for me to lower this dependency. Step one was buying worse quality coffee which has less caffiene (inflation and getting laid off during the pandemic helped here). I think step 2 should be 1 cup of coffee and then tea in the mornings, then a cup of decaf and tea, then just tea, then we are clear? Mostly I just want to do this just to see how it affects my life because my dependency is pretty massive.