want to know if i can just finish with H2O only

i have a sour and a runted straw cough that are both in the last stage of flower, i didn't get the biggest nugs off the sour, as it was in bad shape when i got it, i was able to turn it around and veg it to about 6 ft, it was lanky so i super cropped it to maximize the under nugs as well as the main colas, (super crop, bending the sour over and criss crossing the branches so that every nug gets some light) he straw was a runt but i let it go and its made some really dank small colas. the purls i had went through two major catastrophes, now they are just budding late of course but enough good growth to see it through. they were beautiful, i worked hard and they were just about to go into bud
so i just want to know if it will benefit me in the long run to just feed them water? they seam to get burnt when even given a low dose of food. my question is also should i bump it even further back for one more week and feed the sour and straw 1-2 more times? the purls are no food cause i still can't identify the main issue and they went into bud when they stopped getting food, i will probley hit them light again as its still rely in the cycle.

any ideas????? pics are the sour one week ago

Feed em if it's low nitrogen high P n K

Why don't you show some pictures of the effected areas? And most of us give just water the last few weeks.

I'm also interested in seeing this super cropped plant. It sounded like you did it after flowing started?

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