Just wanted to mention that I'm farther down the actual divorce route than you and I can tell you, I went through the exact same thing with crashing from exhaustion and then waking in the middle of the night from worry (and it doesn't help that my daughters are firmly entrenched sleeping with me every night). FWIW, I think it's actually a pretty common experience among people in our position. I had it pretty hardcore for about 2 months - but as time goes on, and I beat down all the problems that arise - it has gotten better. I've definitely been more energetic later. Like everything else here, it does get better.
