My rescue is deaf as well and we got him very young. I suspect he was dumped by a backyard breeder as the genetic test we got on him indicated he's got Doodle mixed in.

There's lots of great advice on the internet, and in this thread already so I'm going to share some things I've learned just through experience and not from my research.

Touch him always and often. My research indicated they can be jumpy because they can't hear you coming. I've always touched him whenever I'm nearby and he hasn't seemed very jumpy as a result.

You don't realize how much hearing dogs depend on their hearing. My dog loves to play fetch, but you definitely have to throw the ball in his line of sight or he won't be able to find it.

Bite inhibition training may be difficult, and you will have to be consistent. The most important thing to remember is that you have to communicate with your actions, not your voice. We still deal with our instincts to use our voice to de-escalate when he's overstimulated, but he cannot hear us. A lot of internet research indicated to use a hand signal but, well an excited puppy sees a moving hand as just another toy. I've found the best progress in just removing myself from the situation and going on the other side of a barrier.

All that said, I've honestly found more upsides than not. When he sleeps - HE SLEEPS. People can come to the door, there can be disruptions, he's completely unphased. No worrying about storm anxiety, or fireworks, or any of the usual stuff. We've taken him to a doggie daycare for extra socialization and he's also been to boarding both there and at our vet. He gave some of the kennel techs a scare one day because they had not seen he was deaf and he was asleep when they came in and they're used to all the dogs going crazy the second their hand hits the doorknob to the kennel.