Necessary to hold pee for 4 hours?

Chrissie

Hi all, first month trying to do opk and I read somewhere it’s best to wait 4 hours to pee for an opk. I drink tons of water during the day and I just can’t manage it. I try to stop drinking water at noon, pee around 12:30/1 and then take the test the next time I pee. Problem is I’m sooo thirsty after like 2 hours. Would waiting 3 hours be enough to get a positive result? I don’t think I can go 4 hours without having water!