Help with Jumping while walking

Hello, I have a huge puppy that walks fine on a leash. Im not sure what triggers it, but he would randomly jump up at my face and do like a weird lick nip and goes back to walking. It’s pretty scary tbh cause he’s only 7 months and already 60-70 lbs and still growing. Im unsure of his breed, I got him at a shelter and he looks like a doberman, rott, shepherd, heeler, pit mix

He hasn’t actually bitten me, but family members aren’t too keen on walking him cause they don’t want to get bit or jumped on. I also don’t want to deal with that behavior when he’s fully grown and heavier.

He does have a tendency to jump on people when he’s excited and we’re still trying to curb that as well and found some tips that have helped with that.

I’m just unsure what to do with the nipping while jumping. Ive just been ignoring it and stop and wait for him to sit or calm down then walk again. I don’t think he’s understanding that I font like it when he’s in my face. Im thinking about getting a prong collar and a muzzle in the meanwhile, but still hesitant on the prong collar cause I don’t want to hurt him accidentally.

Any tips or advice is welcomed