By two years of age they have teeth, they can chew, they can eat human food...
By six months my children had teeth and were able to eat human food. But, I still breastfed them past the age of two. Well, that is, when I wasn't pregnant with one of their siblings. My youngest is two and still nurses.
"By two years of age they have teeth, they can chew, they can eat human food..."
Try and explain THAT to Miss Empty Head ... .