Auto Duck - Balcony Germany (Soil + Chicken Poop)

lol now it deleted it.. FFS... this site is a pile of shit. autoflowers suck.. that's the gist. Your soil is less than optimal aeration and drainage by the looks, so that will result in slower growth. The plant looks a bit too lush, so probably overfed a bit and that can slow down a plant's growth. an auto is on a timer you don't control.. everything that you do impacts rate of growth relative to the genetics at hand. ther's nothing you can do to reverse that effect after it is done. Did your methods slow it down a bit? maybe.. but primarily this is about genetics and the dynamics of autoflowers (a lack of control).

Ist normal das Autoflowers nach 22-30 Tagen in die Blüte übergehen

i misread and cannot delete and repost with correction -- just ignore the part about yield, lol. definitely keep it. reduce fertilization frequency or concentration. nothing else you can do to impact yield at thsi point. it is what it will be. there are no magical products that do much.. you jsut have to keep the plant relatively happy and the genetics do the work.