While the games do not count I can see how 0-11 through three games (albeit 2 of them exhibition games) can be a little concerning.
I don't expect him to have the % he had last year, while he may not have the fall that CJ did when CJ became the focal point of the offense but CJ when wide open being a third option looked like a great 3 point shooter with a solid stroke, went from 47% from three his Jr. year to 28% his senior year.
As for the exhibition games, hoop, ball, court, and competitive opponents on the court are all the same as pretty much a regular game. Probably is a slump, time will tell, with his stroke and shot selection he could easily go 3-3 tonight. Time will tell.