"Don't panic. You know more than you think you do" - Dr. Benjamin Spock
That's one of the beautiful things about growing up is that you're more prepared than you think. Adulthood is often just adolescence but with a few more tabs open. I've worked with a lot of 17-20 year olds who bring up things like not knowing how to cook. A crock pot you literally just pour ingredients into and walk away from. And more often than not, scheduling appointments tends to flow pretty consistently once the ball starts rolling. You've got this, more than you think you do!