How to get taller when 18

Patient: Hello, I’m a student im highschool who a junior and is turning 18. Right now I’m 5ft 9 but I wanna be at least 6ft. Is there any way to get taller by natural way or by exercise methods? If there is please describe like how many times or like morning or night? Or 6-7weeks or something like that. Please this is a serious matter for me. Also does masturbation stunt growth?

Symptoms: None