So there's a mechanic in the base game where to start quests you have to wait X hours in real life. And to unlock those quests to start the timer, you need "power" which is gathered from doing side quests or clearing a repeatable encounter. Combine this with all of the grinding stuff like gathering herbs and unlocking fast travel spots everything is a drag.

There are mods to reduce or even remove those requirements I listed so it's up to you how "cheaty" you want to get. I essentially removed the timer, doubled my power and XP gain, and removed the harvesting animation (honestly the best mod). Even then, after only doing main story quests, what I felt were important side quests, and like half of the companions quests, and only the final dlc to see the true ending, it still took me 55 hours...

Best I can say is start it up and when the game dumps you into the first map, only do the main story quests and then move onto the next zone. Because each map honestly probably has its own 55 hours of picking up rocks and killing bandits.