“He's nervous about making friends at the new school.”

Your 12-year-old son is going to start at a new school next week. He's worried about it because he doesn't know if he can make friends. You're telling your husband about it. You say:

He's nervous about making friends at the new school.

nervous about (doing something)

You use the word "about" with "nervous" to tell the topic of someone's nervous feelings:

I'm a little nervous about this.

You can say that you're "nervous about" a noun, like in this example:

Are you nervous about your speech?

Or you can name an action you're nervous about using "nervous about ___ing":

Lots of people get nervous about speaking in public.

make friends

You use the word "make" to describe getting new friends:

I made a lot of great friends in college.

It's hard to make friends when you work at home.