I got offered it and said no thanks. My mother will take it, she can't wait. There is nothing I can say to her. At least your Dad sounds like he is not as far gone. My mother is a boomer of course so thinks the government is her friend and and would never lie to her.
My dad is actually extremely skeptical of the government and doctors he has always said it's all just about money. I was pretty shocked when he told me he was going to take it because he was saying this was all a hoax even before it hit. His older brother getting it is what swayed him and made him believe it was okay, he looks up to his older brother he is the King of the family since my grandfather passed a long time ago.
Now that he has tested "positive" for covid and has ZERO symptoms....he's pretty apologetic for ever even considering taking it.