That and more. At some point you need to let them do what they will do. It's their life. You did your best and that's all you can do. My son did the same I gave him every article, every video but his company's president made a big issue out of it and he knew he'd never get a promotion, a raise, or be accepted by his peers so he acquiesced. He got the first Pfizer shot but told me he won't get the second. Whatever. I love him but it's his life, his decision.