spreading

I've just trimmed and spread out my plant, I didn't over do it did I? I don't think I did just looking for a second opinion. Before and after down below.

Does anyone know whsts going on? It seems like I cant get an answer , the brown spots keep spreading to other leaves and destroying them and im worried for my plant. Medium is FFOF mix with 30% coco coir, water once they dry out about every 3 days, feed every second watering so about once per...