Sleep? Whassat?
I work two nights a week, from 11 - 7. I go to school--college--four days a week. I also work from home a lot, and have a side business of my own. Between my son's homework and mine, between regular chores and cooking, shopping, laundry, cleaning, and reading textbooks, I don't sleep much. I catch up on Sundays; I sleep from about 7 am until noon, then go to bed early, and sleep again until 7 am on Monday. That's my catch up day. Otherwise, I nap a lot, whenever I can, like a cat.
If I feel any difficulty falling asleep, I simply tell myself a story. Write the dialog, do the proper punctuation, imagine scenes, play around with plots, or review background for characters. I also consider various changes in things I've already written. Whenever I find myself saying, "you can't do that," it's exactly what I do. I love a challenge. And I love to challenge my characters, too.
That's my sleeping pill. It's lots more fun than studying the French textbooks. I do despise an irregular verb.
I write during breaks and summer vacation. Until I graduate (I'll be 45 when that happens) this will be my writing life. About five months a year, total. The rest is school and chores.
Hope this helps.
ned