My instructor at school told us that when a baby turns 2 years old they are exactly half the height they will be when they are adults? Well if that is true that means my son who is 36 inches at age 30 month will be at least 5'11" and im 5 ' and his dad is 5'5" so can he take after my uncles who are all at least 6 feet? Or is that not even a good way to look at it because my instructor says lots of crazy things