Hi, couple points.
“mayan dvash”, I remember a study where they considered more than 12 cups as big coffee consumption.
I can relate that it is harder to quit coffee than cigarettes.
Try cutting down by putting less and less coffee into cup, slowly (patixonichku).
After quitting around 6 months ago, I feel less tired all day. I quit because I noticed my dependence on coffee, even though I barely was drinking 3 cups a day.
All the best! Remember to pick your battles.