Create Custom Footnotes System for Chapters

I need to find a way to reproduce the WordPress footnotes system in Custom Post Types. The only work with Posts by default. Even after days of working with various AIs, we were not able to get this sytem translated over to the Chapters CPTs. Even if it did work, it seemed it would probably break all the time. My goal is to convert the copy and pasted footnotes from the rendered posts to have the same functionality in their “list” block format. I will assign anchors to the footnotes area which will link back to the reference. Most likley will need javascript code to update numbering scheme.