How do you increase or decrease the height or width of a vim buffer in a way so that when you hold down the key combo, the size constantly changes?

Problem

How do you increase or decrease the height or width of a vim buffer in a way so that when you hold down the key combo, the buffer size constantly changes? I know CTRL W < works but it moves it one unit at a time. I am looking for a way that when you do CTRL W < and hold down the < that VIM changes …