If your child loses sleep while you are teaching him new patterns because he is up crying during the night, don’t let him sleep later than usual or take more naps or longer ones the next day. If you let him make up in the day the sleep lost at night, you will only succeed in shifting some of his sleep from the nighttime to the daytime, ensuring that he will be awake and crying more the next night. If he ends up short on sleep one night, that’s okay: it will actually work to your advantage the next night.