Help! Working nights and trying lose weight

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Help! I am a nurse and have recently started to work nights 7p-7a.....

My getting healthy trip is all out of whack; I feel like eating at midnight vs. noon is ruining my weight loss efforts.

Plus, I sleep about 5 hrs now versus the 7 I used to get at night. (I also have a monster size headache, which ruins workout efforts, but thats besides the point.)

Does anyone else out there work nights and/or have any tips on how to fix this?
Should I wake up during the day to eat normal and NOT eat at night?

Please tell me there are successfully healthy people out there who work nights!!!