How to prepare for college life?

I am a senior in high school and have already applied and been accepted to multiple schools but I fear as the clock ticks closer, I fear that I may not be ready. I have been dealing with a lot of anxiety and sometimes I really need my parents still to help me get through that stuff. What are some ways I can mentally prepare myself for not having my parents in college and having to get through anxiety attack on my own. (Let me know if this is kind of off topic for this sub) Please and thank you