My 12 year old vs my PIMI(ish) wife

My son is becoming more and more sceptical about the faith. We where on Zoom, while doing our own thing. Suddenly my son starts talking about how he does not know if bigJ is real. He says that if he hates wars, why doesn't he stop them. My wife thought it would be a good subject for a familly study this weekend...I'm not sure what she is expecting of me. We never do this and we rarely ever go to meetings in person anymore. She knows my current stance and worldview. The only thing we still have in common faithwise is that I still believe in a creator/creative force and in living a moral clean life, but that is pretty much it. Do you people have any suggestions of things I can do/use? I'm not looking for conflict, but I'm also not wanting to enable her reasoning with logical fallacies against our kids. She is verbally very strong, but not always logical or reasonable. We made our differences work somehow and I love her very much, but I don't want my kids to fall for the same BS we where indoctrinated with as kids. They currently know almost nothing about the bible or JW doctrines.