Normally DD diaper is very wet in the morning. This morning her diaper was completely dry. She did sleep from 8:20p until 5:15a. Normally she would wake up and eat once in that time. She had a bottle from DH and then went back to sleep until 7:30a. I went to change her and nothing. And now when I changed her(1.5 hr later), it was only a little wet. Should I be worried?