I wish you luck, may he remain open and become willing. It's really tough for that generation. Even those that smoked/grew in the day have a hard time calling it medicine, it's dope to them, for getting "wacky". At least this has been my experience, my dad is the biggest culprit. He supports what I'm doing, but he grew dope so folks could get high and he feels that's all it really is. If he's willing to give it a go, my favorite local dispensary gives rso to cancer patients for free. They have there own amazing very prosperous garden, so they share the love. NW Washington is a pretty sweet spot for a little RSO holiday. Hit me up with a pm if you want their name. If he's interested, I'll do what I can to help.