Milo can be used as a nickname, but if you’re gonna do that, you may as well just name him Milo.
Famous people named Miles:
Musicians Miles Davis and Miles Kane; actors Miles McMillan and Miles Jupp; singer Miles Wheeler.
In Marvel Comics’ Spider-Man series, Miles Morales is the name of the new ultimate Spider-Man following the death of the original Spider-Man, Peter Parker. He is also the first Spider-Man character of color.