There's already a The Blood of Dawnwalker mod which triples the length of its main quest timer, ensuring saving your family from vampires isn't stressful

Summary

Why the rush, The Blood of Dawnwalker ? Your protagonist Coen's family have only been kidnapped by a vampiric dictator who's slowly draining them of blood. Let the kid take his sweet time in finding a way to deliver them from the castle dungeon. After all, he's got a tonne of bandits he could be killing and other fun little adventures he could be stumbling…