Joe, without getting into the immunize/don't immunize debate
(Actually I'm qualified to get into it because I immunized children for over 30 years and I've read all the information available to me. I've also been earbashed, with the use of questionable information, on the evils of vaccination - some of it REALLY weird - alien takeovers included.)
I don't think you stand much of a chance.
The only thing I would do is "speak my truth (as I see it ) quietly and clearly" and hope some of it gets through. "as far as possible, without surrender, be on good terms with...." the wife and child.   Good luck Joe. Cheers, Joy