Some assistance please

So i've been scouring through the forum for an answer to no avail as alot of the pictures to reference arntz showing up ill just ask.

Soil grown mixed myself
3 days into 12/12
Ff nutrient trio
Ph 6.0 give or take
Humidity high 54%
Low 35%
Average 45%
Temps high 81 degrees
Low 72 degrees
Average 77 degrees

Should i give one more shot of the veg nute mixture before switching to bloom?
Do I wait for flowers before i add bloom?
Or would maybe watering for a few days with ph'd water to freshen up the roots?
Any how hete some pics. My issue is regarding the spotting and brittleness of leaves on one, and on the other a bit of twisty funny stuff? (Last pic)
I think maybe i switched to bloom ferts a bit earlier than i should have and am now N deficient, first time though so best to be sure.

Thanks
Fred

Add a kelp extract and don't start "bloom" feeding till week 3 after the flip. Week 3 mix veg/bloom 50/50 and at week 4 go full on bloom.

Um, what did you build that soil with and list amounts of each part - include everything that went in please.

Started with bag of miracle grow an mixed in a bag of just dirt and tossed in extra coir to lighten it up
Prob
50% miracle grow
30% dirt
20% coir
Yes i know shame shame miracle grow
Options locally this late in season were limiting. The mix is very fluffy. Worked great through veg.

While i have your ear. Would coir with expanded clay resting on top be a better medium? Just so im able to monitor 100% of the nutrient intake? Im sure this is all covered somewhere in the forum will keep thumbing around as well.
Thanks

Problem seems to persist. Couple more leaves showing the yellowing moving upward on plant from base. Sparse but still a concern. Going to flush with phd water tonight. Any ideas as to cause?

I would do a foliar feeding of the kelp extract. I am always amazed at the fast improvement. I foliar feed up until the 5th week of flower and have had great results. I alternate between the kelp, epsom salts, and plain distilled water. I know that there are many who don't think the foliar is the way to go, but it's working great for me. Just make sure you have great air circulation to prevent mold. I even spray them during lights on with no ill effects.

Now, by foliar feeding you refer to using spray bottle for nutrient feedings?
Can i still do this with the ff trio? Or should i just give them a mist now and again with phd water.. Apologies, learning along the curve best i can