As a precaution, making backups should be considered a routine activity.
Backup from cPanel
From a cPanel account, you can create a backup using the Backup Wizard.
Per our documentation, "The Backup Wizard interface allows you to back up all or part of your website, or to restore it from the most recent backup file."
Backup from WHM
From WHM, you can create a backup using the Backup Configuration.
Per our documentation, "The Backup Configuration interface allows system administrators to customize their scheduled backups."