I just clip it without a guard, usually every 2 months or so, I don't bother to do it very frequently like many people do, I feel it projects weakness to do that.
You do you, but if my hair was thinning to that extent to that I was clipping it without a guard, I would be cutting it every couple weeks.
I get a haircut every 2 weeks just to keep my skin fade in order, and I pay $40 every time mind you! Lol
However you and I may look at things quite differently, as I think cutting it rarely projects laziness far more than cutting it too often projects insecurity.