I don't use cerbot enough to get familiar with it which does say something about the tool that makes sure all my ssl certificates are up and working.
I needed to add a new subdomain and I realized that I should also do some clean up as I currently have a bunch of extra subdomains on my certificate.
This will hopefully be useful for next time!
List out the certificates:
certbot certificates
If there are any certificates you want to delete:
certbot delete --cert-name certificate.name
Update a certificate:
certbot --cert-name certificate.name -d example.com -d sub.example.com -d example.org
This will update the certificate with just the named domains and remove the extras.
To test:
certbot renew --dry-run