After the 10th leap, it will be transition into "toddlerhood". This is when you can start laying down some ground rules and your son should be capable of understanding them. After the 10th leap, it will be the time where your son learns to exerts his autonomy, and starts to be more skillful with things and language, imitates others, role-plays daily life, practices emotions etc etc. This is the time to introduce the concept of "rules" to him and teach him to keep to them.