What diaper are you using? And how may liters do you drink per day?
Admittedly I barely stay well hydrated, at just over 2 liters of liquids per day. For me, after 14-16 hours, at worst, one Betterdry/Criklz diaper might be soaked halfway up the back. I usually won't get an increased chance for leaks till about then anyways, so that's how long I normally go for.
Of note, each of my diapers is ISO rated to hold 148 Oz (4.3 liters) each. Real world rating tends to be 30 to 40 percent the ISO rating. Of most any diaper. So about 1.5 liters in 16 hours is about right for Betterdry/Crinklz. As a test I have been able to extend it to 24 hours in one diaper, but don't recommend that for skin health, smell, sagging weight, and not to mention the sagging weight.