rhodes68answered grow question 5 years ago I think you have your nuet level in the ok range so you did well there.
Do think you were over feeding, obviously right.
Difficult to talk about PPM with soil in particular organic, just works very differently from coco or other hydro forms.
IIRC Bio-grow/bloom ratio is 5ml/gal grow + up to 15ml/gal bloom but less is used in most grows. I wouldnt concern myself with PPM in soil, just PH and dosage charts.