Leaf

You're getting to be late in flower soon the plant starts to cannibalize itself. The yellowing on the edges of the leaves is a K deficiency.

That looks isolated. It would be a potassium deficiency, but that’s just the bottom. I call those “snack leaves”. The plant will eat those first. As long as you made adjustments a few weeks ago, no worries.

yes 100% what organoman says! i mostly use half strength feeds for my autoflowers and even that is too strong sometimes

Waaay too much nitrogen in your plants diet. from feeding too much or too often or both. Can also be caused by not watering to run off each time and due then to a build up of nutrient salts in the substrate. Just plain water for a week might help, the plant needs to consume what is already there before new/more nutrients are given. Autos can usually get by just fine on half strength nutrients, most bottle instructions are geared for photoperiod plants.