Dogs don't always read the book. At this age, he is still very much a baby, and like a baby, need to potty often. The general rules is as soon as they wake up, as soon as they are done eating, after they take a long slurp of water, after they have been playing for a while, any time the look like they are thinking about pottying, and ever 30 to 30 minutes just because. And my German Shepherd was nearly two before she quit needing trip outside in the wee hours of the morning.