Anti-Vaxx Mom — Need Help!

My mom and two of my older cousins are all anti-vaxx. My mom told them all 3 of her children (myself included) are vaccine injured. My brother has autism, my sister has dyslexia (they’re twins), and I have eczema. Two of my cousins felt that was proof enough and now blame vaccines for everything from slow metabolisms to cancer.

I’m currently 5 months pregnant and they always manage to bring up if we’re vaccinating or not. When I say yes, it becomes a full out war I just don’t want to be a part of and they won’t allow the subject to change. What should I do with the upcoming holidays? How can I make it clear my mind isn’t being changed without being chastised as the Mother from Hell? I don’t want to change their mind, just to be left alone!