Over the last few days, my DD has been refusing to nap! She usually naps about an hour in the morning, then about 1.5 hours in the afternoon. Today, she refused her morning nap (I tried for about an hour and then gave up), finally went down around noon, and was up at 12:45. I tried to put her down for a second nap at 3:30, because I noticed her tired signs and wanted to get her down right away. Same thing, just screamed until I brought her out. I know she's exhausted. Why is this happening, and how long will it last?! We are both miserable!