Migrate one multisite subdomain to another subdomain on the same wordpress multisite installation

First post.
I have a main site called mydomain.com on a multisite wordpress installation. I decided to create a second site called staging.mydomain.com for staging my production site (mydomain.com) on the same multisite wordpress installation. I’ve now completed the staging build and am ready to move staging.mydomain.com to mydomain.com.

I realized this may not be the best approach because I’m sure there are entries in the DB for “staging” that now have to be removed. So my question is in two parts –
1 – What is the best way to move this staging site to production and is there a tool that would do it for me?
2 – If this is not the right way to set up a staging/prod testing ground, what is?

Here are some details of my environment
Wordpress Running Version: 5.4.2
Server: Ubuntu-bionic-18.04 + mysql-5.7.31

Thank you in advance.