I have diaper time / washroom time on the schedule before snacks/meals and before and after outdoor time and before and after nap time .... but I only change them 'as needed' ... so I CHECK them often and if they are wet or soiled they get changed otherwise I send them on their way again ... so some kids in my care might go through 5 diapers a day and others might only go through 2 one before nap and another when they wake up from nap cause they are 'camels' and hold their pee for long time and than let loose during sleep time and never poop here or what not.