There’s really nothing more you can try. Some people just aren’t cut out for it. My brother is a great example. From the get go I lived and breathed hunting thru my childhood. My brother had next to zero interest. My Dad didn’t push him, but made it clear that anytime my bro wanted to go in the woods my Dad would take him. So my bro went a few times to see what the hype was about. Even killed a deer once. Decided it was just not for him. Some people are like that. My Dad & my bro bond thru sports, golf & other issues/activities.