How to set displayMode of a button based on a condition that loops through gallery content

I wanted to ask if anybody had an example of how to do this in PowerApps. I have an App that collects data through a gallery with a couple of text input fields. The 'Submit' button needs to be in disabled mode until user has filled all the text input fields in the gallery. At that point, when all text input fields are filled, the 'Submit' button should be in Edit mode until user removes some data and leave input fields empty. How can I loop through the collection behand the gallery each time a user enters or removes data from each input field to see if there are any empty cells and then change the DisplayMode of the button accordingly?

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