Also, fwiw, tell him to make an effort to chat with the coaches when/if there's an opportunity. I was sitting at the coaches' clinic in 2018, asking Mario Verduzco everything that I could think of about drills for QBs and correcting throwing mechanics, etc., and here comes Frost and Chinander and Fisher, who sat down with us and joined us. They were the most down-to-earth, laid back, genuinely friendly coaching staff that I've ever been around, and I've been around quite a few. When I was included in the conversation, I made a point of introducing myself by saying that I was from a school so small with so few athletes that it was safe to say that they would never so much as see my guys on film unless they were scouting an opponent. They chuckled, didn't care, and started asking questions about my program as though it should matter to them. They're not faking it. They're just genuine guys who love football. If your son sees the Nebraska coach for his position, tell him to go over and chat with him. If they're eating, ask to sit down at their table. Just soak it in, be polite, and talk to them like anybody else, and he'll have a blast.