A sippy cup of water by your child’s bed is preferable to milk, juice, or fizzy drinks, says the NHS. Sugars naturally found in these drinks can pool around your sleeping child’s teeth and cause cavities. What your toddler really needs to help him settle in for sleep is a soothing bedtime ritual, such as bath, brush teeth, book, and bed. If he’s fallen into a different routine - one that involves getting up after lights out - calmly walk him back to his room and tuck him in. Don't lecture or talk on the way back to bed - that only reinforces his behaviour by giving him attention. You might have to do this multiple times. Be strong, silent, repeat this and eventually it will stick.