What would you do to help this plant?

You sure are!! only thing I'd suggest is to give her a good amount of nutrient rich water (with the adjustments mentioned earlier) to get all of the medium evenly moist, then start with the wet/"dry" regime (doesn't actually goes dry just the top of the medium). Its always good to give the soil a nice watering with good amount of runoff after transplanting to ease the relocation and stress of the plant, just make sure to follow the watering regime and letting the medium dry properly!

@BluntZilla - thank you for the quick thoughts! re: Water when the top 5cm/2inches of the medium is dry, do not let the medium get completely dry!! Here is the thing... I transplanted her into dry soil, just about... so its only the inner 3 gallon pot center mass that has moisture... so I can wait until that has 2" of dryness to it, if that makes sense. Thats how I would interpret your thoughts here. Currently, that center mass, last I checked, was something like 8/10 on the moisture scale ( yesterday I believe ), so then, unless you see signs of the plant needing water in the pic, ill keep leaving her alone and keep checking that center mass until it dries on the top :) Sound like I am understanding you?

oh and in order to acidify your soil (decrease pH) try adding sulfur/ Iron sulfate, peat moss, or cottonseed meal. mix half teaspoon per gallon in your compost tea or mix it in the soil and then give it a good watering with runoff. This should fix your pH problem, just make sure to keep checking the pH on the runoff and watering solution!

1/4 cup of liquid is not going to do a thing. To me, your plants look rather over fed. You seem to be giving a lot of different nutrients at close to full/over strength of each, plus your substrate has added fertilizer, limestone (Ph up) and calcium nitrate too. The hydrated lime would be the reason your substrate is 8.0, so I would find another way to adjust the solutions' Ph. Your new substrate has a lot of "goodness" in it already, so I would be easing right back off the nutrients at this stage, especially since they have been freshly transplanted. Also, fill your grow bags right up, this will provide much more room for root development and stop the roots growing through the bag so early. I would try avoiding transplanting them while in flower, any root damage/disturbance during flowering can freak your plants out. Far better to pot them up during veg, well before flipping so that the plant has completely recovered from any transplanting issues and can then go onto flowering without any upsets, even if it is less convenient for you. When it comes to watering, you want to aim for having the entire substrate moist, but not wet and without dry spots. A decent watering, to run off, every few days is much better than a little water often. Both the nutrients and the roots need moist substrate to perform at their best. Dry spots will prevent root growth and make nutrients unavailable to your plant. If the substrate is super dry still, giving 500ml every half hour for two hours (2 litres in total) will allow some of the water to be absorbed before the next lot of water is given. If you try and give all 2 litres at once, most likely the majority of the water will run straight through the pot, due to the substrate having become "hydrophobic" or over dry. Once the top inch or so of the substrate has become dry, it is ready for more water. The easiest and cheapest moisture meter is your finger. Just poke it into the substrate and an answer to how dry it is will become apparent almost immediately. Depending on temps, this could be anything from 1-5 days. Remember - evenly moist and not too dry or too wet either. After a bit more experience and observation, you will "just know" when it is time to water and how much. Most of it is "gut feeling" or intuition/being "tuned in" to your babies. Good luck and happy growing! Hope this helps,... Organoman.

Water when the top 5cm/2inches of the medium is dry, do not let the medium get completely dry!! By the looks of your plants it seems like a moderate Magnesium (Mg) deficiency, if youre growing organically then try ground clam/oyster shells, ground wood ash, or liming with dolomite or Calcitic lime. When doing that keep a close eye on your runoff pH to make sure its balanced in the process. Hope this helps! Good luck and happy growing :)