Hi! First and before all: awesome Van Dyke! I mean really!
As you stated, your cheeks are getting some nice activity and a good sign of it is the good amount of vellus hair popping on your left side. There is no doubt that they will soon turn into transitional and that you will have a good start of well-filled cheeks.
I think it's normal for the hair sprouting in every direction. I have this on one side of my face (but less on the other) and it's way less visible now after a month of growing.

How to grow a HUGE beard in less than a week
(just kidding, it's my personal beard journey)
Days of growing my beard