It sounds like you have a good schedule going. All you can do is keep praising him and give him treats whenever he goes outside to potty and have patience as he grows!
I miss having a young puppy sometimes, but I don't miss the getting up in the middle of the night!
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It's gonna be a hootenanny.
Or maybe a jamboree.
Or possibly even a shindig or lollapalooza.
Perhaps it'll be a hootshinpaloozaree. I don't know.