The only thing, you can do is drinking much milk and strengthen your back, but don't expect too big changes.
Yeah, if you're already matured, it could be problem to grow taller! :D but we grow during sleeping....I'd recommend you to sleep in absolutely dark dark dark black room for more than 8 hours.
I would advise to hang upside down like in the closet for a couple hours a day.
Thank you guys :D any other answers? :)