is it possible and about generator, I found ways to save power and I did half of the night with 49% left so my plan is to use generator at 5:20+ and ignoring completely nightmare tails and music box, they doesn't have time and I will focus on generator, after that is just pray
basically close one door, and open it and close it again as fast as possible, after some attemps (if you are fast enough) the door won't consume energy so you can just do the same with the other door and this mode would be like 100x easier