Lol?

This is probably one of the stupidest answers you'll ever hear, but here you go.

• Consider getting a bone trim.
• Increasing estradiol content(never ever...unless it's a girl).

I apologize for what I wrote.

But you may not have to actually change your stature but rather appear shorter.

There are growth hormones for stunted kids... they can drink milk or other cow products... even all animal products without injected growth hormones pass along hormones to kids....

Well.. I believe strongly in a NORMAL upbringing.  And I don't believe that kids should even be in any discussions of the sort. 

Here are some interesting things on orthodontics and growing:
Starting at 32:15 - 38:16 of http://www.elevateorthopodcast.com/episode47/
Kid grew 6" in 6 months following airway focused treatment.  37:33 is a more targeted start to the story of growth.  The prior information is about ADHD, though.

Sleep is when kids grow.  Having oxygenation in the home matters, too.  Have a few plants. 

Growing too tall?  A visit to the trampoline park... while dangerous can condense spongy bones... but with our body's desire to be in balance... throwing a few punches at a punching bag for the arms is a natural instinct that would go hand-in-hand with torso... legs, etc.