I would make sure your childs levels are OK.  It is really scary and frustrating when kids don’t grow according to plan.  My younger SW CAH boy was really small when he was a baby.  He was not on the chart for weight and was 10% for height.  It really worried me even though I had already gone thru it with another SW CAH boy.  Every child is different and grows at their on rate and time.  As long as the levels are OK then the growth should even out.  Watch out for oversuppression too ( too much medication).

My youngest is still small for his age.  Normal weight but still on the short side. 

Both my boys are doing great in 2nd and 5th grade. Doing sports, singing,  and causing general mayhem. 

Good luck.