In this way, the child's curiosity will follow you to learn Buddhism.
You can show him some children's books, cartoons and videos related to Buddhism.
In real life, parents must also practice.
For example, something happened suddenly, which made people very angry.
But everyone can face it calmly with an inclusive attitude, not angry or impatient.
When children see it, they learn it. It's that simple.
If you have any questions, please ask me. I hope I can help you!