In this article, you will find out how to disable PHP-FPM on your server.
You will first need to log in to your WHM. Once you are in your WHM, please go to Software >> MultiPHP Manager.
You will then be greeted by a screen that looks similar to the below screenshot.
Here you will want to click on User Domain Settings. Here you will be able to enable or disable domains in regards to PHP-FPM. The below image is what you will see on this page.
You will be able to disable any domain listed here, and then you will also see an option to disable it server-wide above the domains. If you wish for it to be off, you will toggle the switch to "Off," which will allow your domains to no longer run on PHP-FPM.
Once you have done this, you can then navigate to: "Home >> Software >> EasyApache 4"
Then click the Customize button next to "Currently Installed Packages" and then click "PHP Extensions." You can uninstall the PHP-FPM extensions for each version of PHP from this page.
Below is an article that goes into the process we have performed if you have any further questions.
cPanel Docs: MultiPHP Manager for WHM » System Settings tab under "System PHP-FPM Settings"