So spend time every day with obedience training with him. In fact, with both of them separately. When he gets overexcited, don't react, ignoring him, even turning your back until he is calm will teach him that, when he gets that way, nothing good - not attention, nor treats - will happen. Also, make him "sit" before he eats, before he is given any treat, he will pick up on the fact that, when his butt is planted and he's holding still, good things come.
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