Can i set a reminder for when im printing to pdf

Hi!

I am wondering if I can put something like a reminder so  that when im printing I get that reminder that i havent changed something yet.

Let say I have a text where I put the name of a source which I later have to add to the full list of sources but I am waiting to do that at the end. When I would do it at the end I might miss some of the sources throught the text.

So my question, is it possible to lets say, mark something so that it shows up when printing to pdf, kind of like a overset text error.

Thanks in advance!