Oh me. I am doing the same thing! Livi usually wakes up between 2:30 and 3:30 to eat. And she goes back to sleep and I'm just left there aWaKe! Today I was awake until about 5:30 when DH got up for work. I slept for about an hour and then Olivia was awake again.
I drive myself crazy by not being able to shut up my mind in the middle of the night. Actually sometimes I do that in the middle of the day too but that's another thread...
I do occasionally take a sleep aid or something like a xanax or something but neither of these things does any good to keep me asleep.
So, anyway, I guess what I am saying is that you are not alone in your sleeplessness.
I hope L can stay asleep so you can too!

~m