I like to use good ingredients too, go to a hydro shop and ask what they have for veg stage fertilizers that are good in soil. Organic.
But if you can't get to good garden or hydro place, what matters over the next 24 hrs is that your plant gets nourishment. I would give it any fertilizer at this point. Preferably something with a higher first number, or even numbers. I've been using a 10-15-10 liquid chemical fertilizer from time to time, and sometimes use it at 1/4 strength as a leaf spray. Spraying the leaves with a mild fert can get nutrients to the plant fast. You have to clean the leaves the following day with pure water to wash off any residues. I recently used it on some clones that were getting too yellow and hadn't popped roots yet. So I started getting nervous and gave them 2 or 3 days of the 1/4 foliar spray. They were looking as hungry as your plant, some quite a bit worse with leaves dying off and such.
Take care in the fertilizer's instructions, and I think always err on the side of less fertilizer concentration. Don't go nutes with the nuts.
