Hey Larry, I see I'm not the only person who hasn't given up caffeine yet! Oh dear. You know, you're drinking a LOT of caffeine in those 3 teas. Yerba mate has a lot I know... Some say yerba mate doesn't have caffeine. Others say it's a different form of it. I don't know the answer, but I DO know they you need lots of extra water when you drink it.
I think you're on the right track w/ your tea-steeping adjustment. But also keep in mind that caffeine is a diuretic and THAT means your body's need for water is even higher! I've definitely noticed getting bound up when i drink too much coffee. When I have more than usual, I have to make myself drink even MORE water. Sometimes I decide all the peeing isn't worth the coffee (which i shouldn't be drinking anyway) and the need for a life preserver.