Nice you will like it a lot. I grew an amnesia lemon. Its amnesia Haze x lemon skunk! Its awesome. Welcome to the forum @rookiegrow. Im growing some now.
Edit: realized i never answered the question. Well the plant eats/consumes the fan leaves in the last stages of flower and damn near done at that point. And curting off a rioe bud and leaving the rest to rioen is the right way to do it. Ed Rosenthal always said never pick a bud thats not ripe! Some times the lowers arent ready and aometimes i use the lower bud ripeness as an indicator for the overall plant.