Time limited zoom link - 1 week?

Hi everyone, 

I am just about to launch an online course with zoom support. People can have a free trial or sign up.
I am wondering about having different zoom links for them?

For example, after a week free trial, and they don't sign up to the course, they will still have the zoom link that the paying members use. 

Wondering if there's any workaround here?

Thanks so much in advance!

Rachel