No child is too young for discipline.
Discipline ≠ Punishment
Limit-setting 101: Key ingredients for holding the line
I believe that whenever we set a limit, we must do so with the following three principles in mind (and in heart, while we're at it): consistency, transparency, and empathy.
Parent Q&A: When toddler bites really bite
What's a parent to do when a toddler bite...really bites?
Rebekka Helford, LMFT 