Just like the doctor looks for milestones, by tracking your child’s height and weight, so should parents track their child’s spiritual growth. Helping them establish healthy disciplines is critical, but it is in conversation that we discover where their true thoughts lie.
Be sure to ask open-ended questions and do spiritual check-ins to see where they are spiritually. A child who is struggling spiritually may be more susceptible to ideas that come from their media, while older children who exhibit spiritual maturity may be more ready to handle making wise decisions about their media. Kids are smart. They learn very quickly what the “right” answers are. So get them talking about their ideas and beliefs.
I had three daughters and each was very different. What could be a problem for one of them, might not be a problem for another. Our personalities are unique and so are our spiritual walks.
source: https://www.focusonthefamily.com/parenting/magic-in-media-harmless-fantasy-or-gateway/