It's like habits, they take time.
Check this out:
https://time.com/6224300/how-to-change-someones-mind/
Highlights:
-"It is possible, but it’s not easy, and it’s not frequent."
-Go in calm
-Practice empathy
-Find some common ground
-Tell stories, not just facts
-Open the door to introspection
-Know when to take a break
-If you’re online, set boundaries