Is there a way to make a report that would display every Project where an aligned custom form had an update made with a date range?

I'm trying to make a report that lists every Project where a particular custom form had an update made to it within a date range. We have a custom form field that defaults to a value, so I'd like to simply isolate the Projects where that value changed within the date range entered.

I thought it would be using "Categories Last Updated Date" as a prompt but that is seemingly tied to the last update made to the custom form itself, not the Projects that custom form has been aligned to. Though, I thought that's what "Category Last Updated Date" would be, they don't look to be doing anything different from each other. Any ideas?