If you don't start letting mommy sleep past 6am, she will never have the energy to raise you when you actually show up.
It's the weirdest thing. no matter how early/late I go to sleep, or how awful my night's sleep was, 6am rolls around and I just. cannot. sleep. Don't get me wrong - I want to! I had horrible nightmares all night long last night, I'm completely exhausted, but my body seems to feel that no mommy-to-be should be lazing around in bed at - oh - 6:04am. Simply unacceptable, mommy-to-be!