How should I prepare for being a clinical psychologist?

Hello I am a rising high school senior who is almost done with my associate's in arts degree. As I am taking college classes to save money and time. I am sort of stressing on how I should prepare myself when I enter into university since I won't have much time to prepare for graduate school. I want to do a Ph.D. in Clinical Psych after under-grad but afraid that I won't have enough time to develop my experience and skills I have done. What is some advice to help prepare for Ph.D in psychology or opportunities that I should be seeking to help me dive into the psychology field more to help my application in the future. Anyone who has been in this position with applying to school for Ph.D. in Psych or who is a psychologist!! I am open to advice and input here