First words of the next page is a bit unusual, and unfortunately it doesn't quite fit into the things you can do with a running header variable (you can read about variables in the help files), so I don't see a way around having to enter this text manually SOMEWHERE on your page, either in the footer area or a non-printing tag that could be picked up by a variable, which means it isn't a practical method for automation.
Maybe someone else has an idea...
Aha! Very funny!
If you only want:
[Apparently, you have an auto-numbering para style!]
Yes we can!
Otherwise [JS] can handle it!
I'm curious how you plan to have this automatically update during editing....
I did not say it would be "in live"!
When the page layout is complete, then we take care of footers [before, we'll take the opportunity to remove all the hyphens between pages // with script!]
That said, handling is simple and takes 1/2 minute(s) [script + grep] but it has some limitations [as I said]. If the layout moves, you can do it again easily!