Nute Problem

I posted this in indoor growing but i fucked it up and people looked at it but didnt reply cause they prolly though i was an idiot so i concure i am an idiot but an idiot with a question

im 9 days into flowering plants showed sex but i was noticing a small amount of dead patches in the middle of the larger fan leaves at first i figured it was mag def so i added some epsom salt but i realize now it is P def i was wondering how should i take care of this im not suppose fert for another like 6 days i fert every 2 weeks but i dont want the P def to effect the bud size and bud growth also i dont want to over fert and fuck everything up so what should i do :-(

Is this a soil grow? If so,

If I were you, I would...

Flush the plant out. Completely.
Wait a week.

Stop adding SPECIFIC minerals. This is unbalanced nuteing good for hydro and bubblers but not for soil.

Water in one week with a good quaLITY fert that contains everything in like 4-7-7 or 5-15-10 balanced ratios.

Get some cactus ferts and add 5 drops per half gallon and some superthrive.

If you are growing hydro or bubbler, ignore my response :)