Hey, so after looking through your diary. The issue I find that can be the cause of an early flip is stress.
And seeing you ran your autos 24/7 without any rest. Well. That's your reason.. also it's the reason why the plants stay small.
Think of plants as living things. Like ppl. If I stayed up 24/7 yes, I could do stuff, but with 6/8 hrs rest. I would be MUCH more productive in everything I do. Plants are the same.
Autos, ppl think you can run 24/7 but you all it means when they say you don't need a light change to flip them. So you can run mixed tines without risk of vegging etc. Ppl run autos outdoors or whatever.
But THEY still work of the same thing all weed plants do, DLI.
And yours aren't getting enough bursts of energy to make big pushes..
You shouldn't run autos or weed plants full stop without giving them rest pal.