Can I die from being too tired?

Every day I get more tired(mentally and physically)
I sleep every night 8–10 hrs, day off 12–19 hrs.
every day is getting more “foggy” harder to concentrate, harder to move. my job is alot of mental/physical work
I’m in a constant state (feels like just before you fall asleep)
a little wile ago I took 4 days off from work and slept 20–23hrs every day wake up, go to the bathroom have something to eat, fall asleep
feels like I will fall asleep one night and not wake up again.
any help with this would be greatly appreciated.