Harvesting half of a plant & giving lower half 2 more weeks.

Has anyone actually harvested half of a plant...and let the lower half of the plant flower for an additional 2 weeks to allow the lower fluffy stuff to grow a lil thicker?

Does it work?

here is a post about same thing
https://www.rollitup.org/general-marijuana-growing/426968-topping-crown-bud-harvest-time.html