hello--- i am a concerned father , my son is 9 years old, and i and my wife both are 5 feet 4 inch tall. I am very concerned about my sons height at maturity or puberty , he is my first son( first child) , and i want some medications or injections to start to give him from this age, so he can attain atleast a height of 5-8 or 5-9 till his maturity. my sons weight is 26 kgs ! 9 years old.