I think watching your urine is a good guide, I think it should be - not clear - I got caught up in the hype, peeing clear for a protracted time is a sign of over hydration, which lead to muscle cramping, which was an obvious symptom of an imbalance.
It was a few years ago I decided to use my instincts, I don't count how much I drink, I drink when thirsty, the sub conscious is strong.
My urine is neither clear nor yellow.
I do drink more when exerting myself or eating pizza.