Changing CMS Collection Field Type

So I set up my CMS collection using several rich text fields. I need to use this data to sort by, but evidently you can’t sort by data that is input into a rich text field? Is it possible to change the field type from say Rich Text to Plain Text in the collection? Am I missing something (high probability)?

I saw a post on adding a sort field with numbers, but not clear on how that would work or if that is the best option. My collection is small enough that I could redo it.

Any advice on how to proceed would be appreciated. Thanks everyone.

Here is my public share link: LINK
(how to access public share link)