Leaves actually aren't that bad. They have plenty of green to feed plant still, so you are not low on nitrogen. Adding N now while she's not in steady growth will cause nute burn.
Also, as pH rises other nutes will become available again. Adding nutes won't help while you have pH lockout, and when lockout is fixed you will have too much nutes again.
Underlying rule: Deficiencies are a lot easier and faster to fix than nute burns. A lot of growers say that letting a plant get hungry for nutes occasionally is beneficial in long run, encourages roots to grow and search for food. Same with water. That's why we let pots dry out almost completely.
Old leaves will continue to look bad, but new growth should improve gradually as pH improves. 2nd underlying rule: Bad things happen quickly, good things take time. Plant will be healthier in long run and have more strength to put on weight in final weeks if pH increases slowly without shocking plant.
It seems illogical but the best course of action right now is to wait and do as little as possible. Deal with pH first, slowly, then any other issues that remain. I think most of those will clear up with pH.