Nit deficient or toxic?

this DosiDo from GPS is about 4 wks into flower and has had yellowing leaves pretty bad since 12/12. The ppms were quite high (1200) and I started noticing what I believed to be nit toxicity, so I flushed down to about 950 a week ago. I’ve watered with just PH’d h2o twice since (it’s a huge plant @40”). Is this still the “healing” of the nit toxicity. Should I start giving nutes again or hold off a bit more? She’s still growing like crazy, but not a top of tricomes and fairly odorless.

Thanks in advance!

At this stage of flower don't give nitrogen except via cal mag.

On second thought don't give anything but molasses water. You're too close to want to taste nutes.

Over fert. even 950 is too high for a soil grow as it looks like that's what this is. If you're using soil that has fert, then you don't need to give much extra.