By the age of 4 most kids should meet set milestones. Most kidz can form sentences of several words. Most kids can understand and comply with simple requests. But most kids aren’t like Zaden. Most kids don’t have autism and those who do aren’t my child with his unique.issues. I love my Zaden but not being able to communicate is hard. But i know some day, things will get better. Im holding on to that as my inspiration. It has to get better right?