Your advice sounds similar to what we did with my son. He said he didn’t believe in our church anymore. We told him he didn’t have to believe it, but he did need to attend to show respect for the family and our beliefs, which included his conduct at church and home. So he went, eventually he went through a crisis where he turned back to, and found his own belief in our church. Now he goes because he wants to, but good friends and leaders in our church were a great support system through it all.
This is a great way to address the religion issue, and keep the family going in the right direction. Thank you for sharing your great success!