It’s all too easy for kids to get distracted with other things and as a result they can sometimes fall behind with their training, start missing a few sessions or not practicing in their spare time. This is fine, all kids need to be able to have fun and explore their passions.
One thing that you can do is to help fuel their passion for the game by watching professional games with them. You can discuss between you what the pros are doing to warm up for the game, how they get prepared for an attack and how they position themselves in the goal.