Leaves yellowing in a rapid speed (flowering). Nutrient deficiency?

Burning from excessive fertilizing............."nute burn".

Double check your pH. Low pH can lock out Mg. Mg deficiency usually starts at the oldest leaves first.

do you check the pH? wrong pH, the ladys cant use the nutrients

magnesium. epsom salt or calmag to sort out, better epsom, way faster work. if its soil, sometimes you get it if you overwater, aka water pot while he was still moist. soil needs wet/dry cycle.

It does look like Mg deficiency, but a bit strange that it's strong on some leaves and hardly on others. Leaf tips look fine, so not nute burn and nice and dark, so she's not lacking N. I would try some Mg and see how she reacts.