It takes up to a week ( once on 12/12 light ) for plant to chemically change its stage.
For FF nutes : use the feed schedule that's available. I go ONLY 1/2 strength max thru entire grow. This nutes need constant flush ( at least every 3-4 weeks ) . You can also get their BLOOMING AGENTS - Open Sesame , Beastie Bloom , Cha Ching.
These are good additives to use ( when plant is healthy not full of problems ) .
Open sesame - for preflowering ( starts early buds / builder ) early flowering stage.
Beastie Bloom ( my favorite ) - used during mid flowering stage when nitrogen is lessened . ( 0-50-30) builds weight / size . Very good product. I have FED with this only during week 6-7.
Cha Ching - Resin booster - this is a product during final weeks of flowering.
Helps increase resin production ( stimulator ). I have run grows with and without.
You can add Molasses for sweetner / micro sugar feed. I actually found that this product WITH a UVB lamp PUSHES the resin output very well.
Do grows by the book ( recommended doses ) and cut in half. Product maker feed schedules show the MAX dose. Base feedings on how well plants do. Every grow is different. LESS IS MORE >>>>>>>>>>