Thanks! 18 holes 4X a week is a lot. We try to do it 2X week, but even that is difficult. Part of it is I'm not a huge golfer (my boy crushes me every time, score-wise). My boy would play 4X per week if he could, but that's too much for me.
Yeah, a lot of kids are pretty serious about sports these days. Much more so than I remember as a kid. That's one nice thing about golf, unlike most other sports, it's not really a "dead end." 99% of kids who play baseball or basketball won't play at all once they are out of high school, or certainly once they are a full working adult.
I try to not put pressure on him, I tell him it's ok if he doesn't make the PGA Tour. A full scholarship to UCLA or Duke, and a few years of top 25 on the Nationwide is good enough!