Still Sleeping!!

Chad and I put Clayton to bed between 8 and 8:30 last night (see below). This was our first night to start his routine earlier. When I went to bed I thought, for sure, he would wake up hungry around 4. It is now 7:15 and he is still sleeping like the picture below. Should I start the celebratory dance now? Is this a fluke? I guess time will tell. I am anticipating a night change, oh...in about two weeks when I go back to work to finish the school year - he, he!