I struggle with oversleeping in the fall and winter due to lack of sunlight and I can’t sleep in the late spring and summer. One of my pdoc’s diagnosed that (along with other symptoms) as seasonal affective disorder.
Mostly negative symptoms. I have them even when I am off meds and I drag tail 24/7. I don’t know if this will help, but I have found that the lack of energy is partly a delusion. I am okay once I get going and I can keep going well enough. It is getting moving that is the worst part.