Can I recommend watering down the juice maybe 50-50 water and juice if not even more water as an occasional treat during the day? It's what my mother did although that was more because juice is pretty sugary and not the best health wise as opposed to teeth protection.

Heads up, milk is also really bad for this. There is a lot of sugar in milk. My daughter needed 2 dental procedures with laughing gas at 5 years old because the sugar in milk ate away at her teeth.

It’s not as much the juice as the child falling asleep with the unswallowed juice and bottle still in their mouth so their mouth ph never balances back out. At least that’s what I was told.