Leaders must encourage young people to see the choice that is set before them.
Confirmation is an adult decision of faith.
They are ready to make that choice. In many parishes, the clergy want to direct the Confirmation preparation themselves. Parish clergy generally have a plan already in their heads for what they want to lay before the kids and require of them, and would have no use for lessons we might offer. This might form the framework for a discussion with your parish clergy about what should be reviewed with J2A members as they move to the point of making their mature affirmation of faith. That is, after all, the big question for all Christians.