Look, the "8x8 rule" (eight 8-ounce glasses) is a fine starting point, but it’s not sacred scripture. You are not a plant that requires a precise measurement of water to bloom. You’re a human, and you’ll survive if you drink 60 ounces one day and 80 the next.
The real goal is consistency, not perfection. Your body is a complex, brilliant system that knows what to do with extra water (hint: it goes down the toilet). So stop stressing, drink when you’re thirsty, and maybe aim for that half-your-weight number. Your giant water bottle will finally stop mocking you.
Now go refill that glass. Your kidneys are waiting for their applause.