He is so cute!!! I too am partial to the dark color/markings. So I cheated and got an older dog hoping that he won't change much. It worked!
It will be wonderful to see what Jobi grows up to be.
The only advice I can give is start the training ASAP. So he's not into treats, maybe it's the wrong kind? Maybe he's toy driven? Just find whatever motivates him. Training is a blessing in disguise. It will help you have a well behaved baby and it bonds you two together.
Welcome to YT!