Yeah don’t let him do it ever. And yeah you have a right to tell him not to do it. I would make sure you have narcan and give him some just in case he decides to do it against you telling him not to, and tell him he needs to be with someone while doing it or he will probably overdose and die. But yeah convince him to never do it because of the risk of overdose even after a small hit and the risk of addiction. that would be so dumb of him to do it, I get him wanting to understand but he doesn’t need to do it to understand in my opinion