You’ve been given excellent advice in the various replies. In addition to what was written above - SDSU states on their website to “Allow time for processing. It may take at least six to eight weeks for appeal decision.” “At least” should be emphasized. If you look through previous years’ discussions about appeals, sometimes it takes months and months to receive a second denial or, in very rare situations,a reversal. In years past, some students don’t hear back until August. Admissions has a ton going on and everyone is contacting them. It is a huge school, and their focus is on current and admitted students.
If you want to appeal, absolutely do it, but don’t count on it being reversed and do make plans to attend your second choice school. SDSU is very upfront that they seldom reverse denials. Like many students, my kids didn’t attend their “dream” schools. I’m not really sure if they even had one. Even with 4.5+ GPAs, they didn’t feel any school was their safety because university admissions can be so random, but they found a path that uplifted them, and they received awesome educations. Looking back, they ended up in really great situations.