Who cares how tall you'll be? But you still don't know 100% how tall you'll be until you actually get older.
I am 6'5" and my mom is 5'4" and my dad is 6'0"
All my uncles on my mom's side are tall while people on my dad's side were average. So compared to my parents I'm very tall and according to those 'doctor projections' i was to be a lot shorter. So realize that projections can be wrong and you should take them lightly.
There isn't any way to actually know how tall you'll be unless you can predict the future.