You can get shorter by exercise.
How do you get shorter by exercising or by eating food or drinks? :'(
I have never heard of anyone getting shorter with diet and exercise. I do know that everyone is their tallest in their 40s and most of us will lose up to 2 inches (gradually) by the time we hit 80.
Just love yourself the way you are. It's okay to be different, being taller has its pros.
STAND TALL☆