Ya I understand your reasoning. If you want to your total EC to go down, it would not be the best idea to feed.
I refer to the plants having an appearance of lockout, and that’s due to the excess as you say, so it goes all the way up the chain, but that is hindering the uptake of the final Elements like nitrogen, resulting in the lighter colour. Arden Anderson explained the phenomenon as a final Carbon deficiency and not any particular element deficiency, as it works back up the chain. So excess induced deficiencies are annoying because they cause other deficiencies.
that’s why I recommend introducing some humic and fulvic, they do well in situations where there are imbalances, interms of nutrient density, the npk if humic and fulvics are seriously minuscule. To Move ppm up 10 or 20 points with humic sand fulvic would be a physical amount I would never apply, so the amounts, the very tip of a scalpels worth. Research is vast, but the conclusions are noteworthy.
very low doses frequently, and frequently is weekly. Will give best results
However, I only consider humic and fulvic useful in these situations. Other times, the plants must encourage humic substances to form by themselves.