There is a document/pdf, that you could copy into word or so. And then strike through everything you have done already.
I would ofcourse find it a great idea, if dev would build something like that in the game, so you can live see what you still need to do.
Without that, I found it really difficult to understand what I should do....
Without it, what I did is go to overview page, and just progress to the next time event,for 1-2 weeks and see if some LEWD or remark was visible, to see if I missed something.