That's a tough one. We do rent additional layers at $1.50 each. You can add those and that ought to be enough. Some parents change baby right before they go to bed- and baby gets used to that and sleeps through, too. You chose. Also, many babies learn pretty quickly to not pee as much at night, then will pee a lot in the morning. So diaper may be wet, but not soaking when she first wakes up, you changer her, and might have to change her again soon after, after she empties her bladder. Hey, never too early to start potty training.