New Sleep Pattern?

For the past 2 nights, Ethan has developed rather peculiar, or rather out of the ordinary sleep patterns. At about 8:00p.m. he would drift off to deep sleep, and not wake up even though we try to wake him up from his slumber.

He usually has his warm bath at about 8:30p.m. and then he would go to bed around 9:00p.m., but yesterday and today, he has had to miss his nightly baths because he would simply sleep through his bath times. In fact last night, I changed him into his pajamas while he was fast asleep!

Could this be the start of a new sleeping pattern?
Will he be able to start sleeping through the night now that he *appears* to be sleeping MORE?

Only time will tell…