Start small
Puppies explore with their mouths, and calm redirection helps them learn what works around people.
There is no need to rush. A predictable, manageable step is usually more useful than trying to solve the whole situation in one day.
Try this next
Offer an appropriate toy, pause play if teeth touch skin, and restart when your puppy is calmer.
Notice what helps your dog stay comfortable and engaged, then repeat that version before making the situation harder.
Keep it kind and practical
Keep the next step easy enough that your dog can succeed. If you are worried about safety or feel stuck, pause and ask a qualified reward-based professional for help.