Flipping to flower Higher P-K and less N

Hoping someone could help me out here. I keep reading when you flip over into flower you want to give your plant more P-K nutrients and less N.. Do you do this for the entire flower period?
I used advanced nutrient line... What do you guys do... I use Bloom bottle A the NPK is 4-0-4 and Bloom Bottle B npk is 1-5-6. I water twice a week,nutes in every other watering. And I use around 8-16 ml per gallon of a&B. So would I just use less Bloom bottle A..or half as much and add that to bloom bottle B?? So maybe run 8ML of A per gallon and 16ML of B per gallon?

Your plant will have a PK & N store ready for flower. A PK boost is needed at around 5 weeks flower or 3 weeks from chop. I must admit, contrary to advise I give a small N dose every 2 weeks in flower (about 1/8 recommended dose)..... Works for me.

nevr really understood this issue, since 1990. Even General hydroponics is cheaper than any hand mixed fertz, most likely more accurate, and has the same results over and over. With an exact science recipe formulation(s), these issues are a moot point. In the big picture, one branch, of one plant, pays for my Dutch Master formula for several cycles of 72 ladies. peanuts, without thinking, or experiencing any deficiencies ever. seems like a no brainer to me. but thats just me. I do not like re inventing the wheel any more.