Stopped nitrogen too soon by the looks of it. Not really seeing any potassium def or a fade here, though some top down shots would help. When you say organic ff, just the big bloom? Kelp me kelp you and wholly mackrel? grow big and tiger bloom, the rest not organic just fyi.
Seems like you had some mild heat stress to, nothing crazy, but thatll stop trich production dead in its tracks on some auto strains.
Autos in particular have a hard time depending on the breeder, and batch, just bc a auto is characterized as a sat/ind hybrid, doesnt mean that the rudi genetic cant big ass its way into being the dominant attribute that shows on phenos ina batch as well. i have found that with those in particular, you can end up with rudi dominant hybrids 3/10 seeds easily, and that shit is legit ditch weed, so they can be genetically predisposed to just flat out trip on thier tits last 2-3 weeks, that coupled with the fact most rudi comes from climates that are fucking cold so there is another predispostion to have serious heat sensativities that will easily stress herm, or burn off trichs way before most other more stables cultivars.
Point being, you can throw a ton of pk at them, theyll eat but wont really translate to trichdense flowers lien yo would expect from some hybrids.
Sometimes it just comes with the territory and isnt the growers fault in any way.