My DD is nearly one, and for 2 weeks now has totally abandoned all routine! She's always slept through at least 12 hours a night.. now we're up to her in the night. She's always had at least 1 nap in the day of at least 90 mins.. now no nap at all. She's always slept in her car-seat.. now she screams. What's this all about??? She's SO miserable at times as she's tired, when she's always been so happy.... Any ideas?