My first recommendation is to keep your toddler in a crib until they are at least 3 years old. Younger toddlers can’t understand consequences, which can make it very difficult to see success. If bringing the crib back isn’t an option, other boundaries can be put in place to remind your toddler to stay in their bed all night. You will need to be extra consistent when changing habits to keep your toddler under 3 sleeping well in a big kid bed.