My almost-3-year-old has been waking up between 5/5:30 for a couple of weeks now. She is cranky all morning and this is throwing off naptime and DS's routine, too. Normal wake-up time is between 6/6:30. Bedtime is 7:45/8. I'm wondering if this is a phase, or if she doesn't need as much sleep? How many hours does your 3-ish-year old sleep per night? She does still nap most days for about 1.5-2 hours. I don't think changing bedtime will help. On the few occasions she has been up late, she doesn't sleep in. I don't think the sun rising through the window is an issue because she's waking up when it's still dark. Any suggestions?