Why Isn’t it growing?

is the space just going to be empty? If so, keep it. If you can replace it, sure i guess... But, just be patient. Not all plants are on the same biological schedule. If you are giving it long-nights, it's in flower whether you can see it or not. being slow does not correlate with greater herm risk, so that's not really a concern either. Also, you have weeks of time to recognize and pull a herm before 1 single grain of pollen is released. As long as you don't ignore your plants, you won't have a problem with pollination even if 1 does herm. there is no risk being patient. There's definitely some nutritional issues - the severity of which doesn't raise concern about herm either. You have time to diagnose patiently and try to fix it. Did you amp up p and k recently? Too much of either can cause chlorosis in new growth -- symptoms are not discrete, there are other possibilities. Could be low S. Even a trace element or two might present like that, so you'll have to eliminate possibilities, as not enough info is given in these questions.

Sulfur deficiency.

maybe its in retrograde?? jokes aside, give it time.

Whose,s on fire? U are brother xD -I,d say u just covered P deficiency Don,t see the problem here, just let it grow.