How to disable Page Preview on sidebar in Page Editor in backend of wordpress?

I'm trying to update this contact page and it's not letting me click update because it's forcing me to fill out the form. When I do a test in the required fields, it's giving me an error. Therefore, I am not able to update the page. Is there a way to disable the preview in the sidebar? This is so frustrating!

Side note - I did not build this site. It's awful.

Topic contact Wordpress

Category Web

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