I actually measure my caffeine and water intake (from all beverages). Currently for 2025 my daily average is 10.9 oz.
I don’t drink a lot but I am picky. I only consume specialty (which is coffee graded on a 0-100 point scale; 80 points and above is called speciality). I brewed cold brew for my STLV trip. So I have ~50 oz of cold brew concentrate for the whole week.
Overall I care more about the beverage I am drinking and how I drink it (my daily driver is a Hario V60), than how much I drink.
EDIT: If you are in the U.S., I recommend the subscription service Mistobox. That is where I get my coffee.
This was the coffee I found for my trip.