Scared I’ll fail out of college

Hi guys, I’m 17F and I start college mid-August. I’ve cried at my graduation about this. I’ve taken AP classes, honors, and everything but I just feel so unprepared. To top it off, I’m going into pre-med to be a psychiatrist and the statistics I’ve seen about the remainder of college freshman that remain in pre-med freaks me out. Can you guys offer me some advice if you guys had any previous anxiety about starting college? I’m actually terrified.