Proper goodbye to 300+ hour farm?

I have a save on Old Stream Farm that I've put over 350 hours into, over more than 20 ingame years, but it's coming to an end.

I've already started a new adventure on Calmsden, and it's just much more exciting now, but i don't want to just stop playing the other save out of the blue.

How do you guys "say goodbye" to gamesaves you've put many hours into?

Anyone have suggestions for how to end it properly? Any suggestions, discussion, questions are very welcome!