Arranging the words depending on the paragraph alignment. But animating the textbox size. Is that make sense?

Sorry, let me clarify. I would like to animate the text box, as if the box by making it smaller from the right corner pivot, and have the text adapt to that box dynamically with multilines, without resizing, just scrolling the words down, as if the box was getting smaller.

Hi! Is there a way to animate the textbox to resize the text adapting the content into that box? I was searching a script UI or something to do that but I was not successful