Its a bit weird but I too feel the same. I slept over 8hrs every night and just 2 hrs of work a day makes me feel lazy. That I feel very sleepy again. Coffee doesnt work anymore. So what I do, I go for a walk around the house for 20mins and a little jog will do. I eat some crunchy foods to make me feel alive again. And I dont think all the problems in one time. Forget first the other ones. One problem at a time. I choose first the most important thing then I will try my best to solve it. At least I did try my best to solve them all once at a time.