Yorkshire aggressive towards puppy. Help!?

I’ve recently got a new female Yorkshire puppy, it’s been with us for a few days now and is my current male yorkie’s offspring. The dog is fine with it being in the house until it runs up and tries to play with him. He starts barking/growling at her but as of yet hasn’t harmed her. We’ve tried holding the puppy so... show more I’ve recently got a new female Yorkshire puppy, it’s been with us for a few days now and is my current male yorkie’s offspring. The dog is fine with it being in the house until it runs up and tries to play with him. He starts barking/growling at her but as of yet hasn’t harmed her. We’ve tried holding the puppy so our current dog can get used to it but he’s too scared to approach the puppy and avoids contact at all cost... how do I help him get used to the new puppy?
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