Just let yourself have a few days of crappy sleep. Pile up some books and DVDs and ride it out. Things won't be normal for a few days. I am 11 days sober, and my sleep patterns are still a bit wonky. I am going to bed without the aid of sleeping tabs or wine, but I am still having some tossing and turning.
But that's okay! Because I STILL have more energy the next day than I did when hungover.
Ride it out, read books, take hot baths, surf the net. Give yourself some time to restore normal sleep patterns.