Tried to tell my dad the truth about the vaccine but he gets angry when I do. He says he talked to his siblings and friends and they all got it and they all feel fine. Won't listen to anything I say and tells me to respect his decision. I cannot knowing that the second vaccine will most certainly shorten his life span. I love him and want to save him, but he's dead set on getting it based on the influence of his siblings and friends. What can I do? What should I do?