Use this time to concentrate on what YOU need. I've learned in the last year that it's vital to take care of your own needs before you can tackle someone else's. Try to step back from the situation, and get your priorities in order. Item number one should always be to take care of your health. You can't accomplish anything if you don't feel well.
Sleep falls into the category of health.
Do whatever you need to do to get some sleep. Cover up your clocks, if you're a clock-watcher. Just for a while, go to bed and get up when you feel like it. It's so important for you to get your focus off of your sleep problems. I'm obsessive as hell, but there came a point when I had to say that I simply couldn't control what was happening to me.