He woke up! No really, they are all sleepy newborns and can't help but to sleep. As they get bigger, they start demanding to eat instead of having to be encouraged, watching the world around them.
He sounds perfect, only one night waking! Eating every two hours during the day is pretty typical. You should find that he will stretch out his awake time on his own when he is developmentally ready for more interaction, and that will stretch that EASY cycle back out. Give him a few more weeks!