I have been using 2-3 fans but not blowing directly at it, or on a low setting if I have it swiveling, I heard it's not good to directly blow at them so do they mean like keep it constantly blowing or mean even swiveling
Direct, oscillating air across the canopy is just fine. Just not to close or too strong. Its also good to have some air moving down low to move air up through the canopy...
Your fan is what strengthens the stem, the fan should " wiggle " the plant a little.