He's living in fear and he's afraid of losing you and your mother if you don't get the shot. Fear is a powerful motivator, but it's never rational and it's self-destructive in one way or another. This doesn't excuse him, but maybe gives you some understanding about why he's so driven about pushing the shot.
Standoffish can be a fear of being hurt if one allows others to get too close, so it's a way of protecting oneself. Pushing you about the shot is another way of protecting himself.
He's living in fear and he's afraid of losing you and your mother if you don't get the shot. Fear is a powerful motivator, but it's never rational and it's self-destructive in one way or another. This doesn't excuse him, but maybe gives you some understanding about why he's so driven about pushing the shot.
Standoffish can be a fear of being hurt if one allows others to get too close, so it's a way of protecting oneself. Pushing you about the shot is another way of protecting himself.