Just to warn you of a possibility. We had two young girls studying in our congregation, their parents were not attending meetings or interested after an initial period of study. They did not want their girls to get baptized so it was all kept secret and the baptism was arranged at a private home with a pool. We were told not to talk about it. That is the theocratic war technique that they justify in such circumstances. These girls were 16 and 17 years old from a muslim background (parents were very western minded, not religious really).
Both girls are out of the religion now but it caused so much tension and division in the family.
Be aware.
I know of over 20 young ones from my previous congregation that are out now. Some paid the price when being disfellowshipped at an early age. It is awful the guilt that is heaped upon them to stay or return if they have left.
The video on youtube with the young collage girl explaining why she is not a Jw any longer would be good for your son to see, it is a young person talking to other young people, hard to ignore the message she is getting across.
All the best
Chicken little