Yellowing/Fading in Flower

Not the greatest pics, Day 35 of flower, GSC in Autopots with Living Soil, only fed water. As you can see a few have started to fade. Thought Nitrogen Deficiency but not real sure, PH was a little high but since been lowered. Maybe I should give a boost, okay to top feed the Autopots with something? Thanks I’m advance.

I don't know about auto pots, but that plant looks like it could use some food. It definitely looks a little light on the N. Not terrible though, I wouldn't go crazy. Is it only the one plant? the others don't seem to be getting the same fade and are probably just fine. Otherwise they look pretty happy and healthy it seems.

be careful about adding N this late, do it gently.

next time if you dont want to amend your soil again water less runoff so it doesnt rinse your soil.

Thanks for the help, think I will do a top dress with some worm castings.