Good for you and I hope he continues!! Its great that you have him on schedule. If you stay consistent he should continue to do good.
However be prepared for set backs. Tucker was pee pad trained and was started outside when I got him at 7 weeks. I continued to pee pad train him because of him being so little and that we've had snow on the ground since halloween. After several weeks he started to go everywhere but the pee pad so I have retrained him to go outside and at 5 months old, he is still having 1 accident in the house and its usually poo and having a houseful of kids under the age of 11, one of them usually steps in it and its not pretty. We have started confining him again to only 2 rooms of the house and we are still taking him out every hour that he is awake. He has been the hardest puppy I have ever had to train.
Im sorry I took over your post and turned it into my vent..
Congrats on the new puppy and I hope he continues to do well.