I wouldn’t say you screwed anything.
First off - it’s been my experience that autos have weird flowering phases where they don’t pack on as much weight as photos seem to.
I swear I’ve had autos that dragggg on those first 6 weeks of flowering so slow. That’s just my experience.
Second, it does appear you have some nitrogen excess. Those leaves look much too dark and glossy.
Things look pretty good tho otherwise amigo!