Too young to “teach” but you can guide them by saying no no that hurts mommy and remove baby’s hands and model gentle touches
Yeah you can't teach at this age. They aren't sure how to express all their feelings. You can redirect them and say no or explain to them why it's bad for practice but there's nothing else you can do.
If it makes you feel better my daughter smacked my glasses off my face twice yesterday 11.5 months
Can’t really teach him yet. Just hold his hands when he starts doing it