
If it's just nibbling then you're doing the right thing by distracting onto toys. If or when it becomes play biting - i.e. mouthing that's getting painful because of those jaggy needle like teeth (ouch!) then try the steps
in this Article specific to puppies being too, erm, 'chewy' :)
It's worth printing off a couple of copies and ensuring all household members and regular visitors follow the same routine.
HTH,
regards Teri