Advice on deciding what gets trimmed in early flowering

LSD auto.
I'm at 75-78f 47-52% rh
I got mold in a Blueberry plant that grew dense like these are.
I do have a oscillating fan down under the canopy as well as above. the yeast water co2 jug.

Bud on the left in the overall pic.

Potassium deficiency first off.

Yeah? I'm not even sure what week to call it these days.
It 55-60 days flower and it's been 70. Week 14 was thursday.

I'm feeding the wk11 late bloom gh recommended for drain to waste for coco. 8ml per gal flora bloom is what I'm giving, plus dry kool bloom, which blows my ppms out of the water and I have to dilute like crazy to get back down, so maybe that's where I'm having a problem with the K being light.
I have to mix more tomorrow am so I could easily change something.