Well first of all i can empathize about the lack of as sleep. I am not a good sleeper at all, so I get it. I am not a doctor but I am as sure as I can be that lack of sleep as unpleasant as it is, won't kill you.

I see you take a lorazepam on a prn.Can you take it at night til you get to the pdoc to help you.Seroquel has also been helpful when I was severely sleep deprived. I have found putting on the radio low and listening to talk radio helps me, but not the real extremists on talk radio. I listen to a talk radio program that i can also get on my computer if I am away f or a bit.

I also keep very faithfully to a good sleep hygiene program including no napping during the day which isn't hard to stick to because I also have a,hard time sleeping during the day even if I am sick, I get exercise 5/7 days Did o not exercise within three hours of your usual bed time.. Watch low key programs at night- no violence, nothing too realistic. Fantasy stuff like Once Upon a Time helps, reading light stuff before bed.
And no alcohol. Also no caffeine after noon time. I do other little but important stuff, too

Hope this has been helpful!