Well if the top coat/Dress is potent enough then that should be fine. Yet the tea ideally should have bee pushed a small bit with those crystals to nearer where it needs to be.Not something i tend to recommend ,yet it can be very helpful. And id would make the tea really pop with life from a few types of wettable powders to food fresh EWC,or similar green based compost,leaf molds things like that.Or build your own if ya really wanna get down dirty. but yeah that should be fine other than the fade which is just lack of foods which isnt really a isse overall. the life fading in the soil would be helpful. but if it were me,I would just simple to a nice EWC tea with a few powders and some Molasses or a little cal mag leaning the tea PH wise with the crystals. imho thats your best met at this stage without anymore top dressing. which may work some but should the PH swing normal'ish,ya might have another issue.but thats how Id approach it man. hope thats helpful