import_playbook?

I want to provision my servers. I have a provision-1.yml that is run as root and a provision-2.yml that is run as a regular user. The sub playbooks are individually tested. I did this once before, but I forget how I did it. How do I make a playbook of playbooks? This is what I’m trying:

import_playbook is not a 'real task' and cannot be added inside a
play, also it won't handle loops.

https://docs.ansible.com/ansible/2.9/modules/import_playbook_module.html#synopsis