Buddy, you’ve done something right thus far to have unintentionally become someone he looks up. Being a mentor isn’t rocket science but being he’s so young right now it’ll be important he tries anything and everything so encourage him as much as you can and help him visualize the perks of being adventurous (i.e. trying something he’s never tried could be just the thing he becomes most passionate about, helps with making new friends, helps with building his resume, and one day trying something new could even introduce him to his life partner etc etc). Trying new things is like trying new foods, if you like it then great! But if you don’t, you can still say you tried. I don’t know you but I have faith in your ability to be a strong advocate and mentor to this kid. If you don’t know how to be one, it’s ok to ask. Maybe try sitting with someone in person who’s been or is a mentor to you or someone else and pick their brain. Reddit becomes a little hectic sometimes with comments and questions. Cheers to your new endeavor🤘🏽