I think you are going the wrong way with nutrients. I was just looking at some other plants in the same boat and suggested and epsom salt flush. I snipped this from a post to me from Doc Bud
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There's an easy way to get rid of excess nitrogen in soil.
Thanks for the tip man I will read up more on it been wondering if I was going the right way cause it dont seem to be helping although I know things take time, did you happen to see if his plants recovered after this epsom salt treatment?
thanks for the advice and glad to
Epsom salt foliar flush coupled with an epsom salt drench.
For the foliar, mix up about 400ppm of Epsom Salt and RO water.
For the Drench, again, 400ppm and run at least twice the volume of water as soil through pot. This can take a while.
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Good Luck they show the love... you will turn this ship around!!