God Bless your son as he prepares for this Sacrament.
The first step is to realize what state we are in.
From there, just don't go more negative or reactionary. Instead, love large and move toward the light.
I just started to teach Religious Ed at my parish. I am educated in my faith. The kids ask great questions but I know if I had not the grace of being educated in my faith, I would not be able to answer the questions. They'd go unanswered and they'd sink away from the Christ and His Church.
Lord knows people are trying, we are just an uneducated lot. Ignorance is not a crime. Acting like we are not ignorant is the shame.
We need to pray and read and pray and throw ourselves into the arms of Our Lord. He can turn evil into good. He can bring us back.