until recently, DD has been really good at going to sleep in her crib. she'd whine and cry for a couple mins, but would eventually know it was time for sleep and would go to bed. but the past few days, she's been standing in her crib and screaming for attention! we can tell she's tired, but she'll just stand there screaming her head off for a good 15 mins or so and then she'll eventually knock out. anybody know if this is just a phase, what's going on?!