I also want to know how big those "cups" are, since the official measurement of a "cup" of coffee used to mean, 5 oz! That's less than your cup measure at home! That's like one of those teeny tiny little delicate floral china cups that old ladies display in their glass cabinets with matching tiny saucers!
I drink "cups" that are considerably more than even 8 oz, and even a small coffee mug, much smaller than most people use today, is 10 oz. Most are 12 to 16.
I like to have about 3 of my 12-to-16 oz coffees (which is about a medium or large, anywhere you go through a drive-thru or walkup coffee place) a day, but have been trying to stop at merely 2. For a while there, I was drinking a whole pot a morning (before I fell pg).
So I certainly hope that 2-3 cups being ok, doesn't mean only one of the usual size of "cups" for modern standards. But it might!