Nutrient amounts and nutrient ratios during flowering stage outdoors

[radrichie61]

OK so I am a first timer with my first outdoor grow three rather OK plants as you guys told me yesterday when I posted. They just entered their second week of flowering stage, the plot that I dug for them is 4‘ x 6feet at about 10 inches to a foot deep. I don’t want to burn up my plants so any recommendation about deciding dosage or amounts of fertilizer to be utilized for the next couple weeks would be appreciated. I sure as hell hope I asked that clearly! I am aware of dropping nitrogen and popping up phosphorus and eventually potassium as well. That much I understand. I think it should be low nitrogen high phosphorus low potassium right now but how much to apply I have no idea. I’d be heartbroken if I burned up my first grow. Here’s a picture of what I got.

Thanks a ton and have an awesome day tomorrow.