Hey Growmie...
I wouldn't pull them, autoflowers can be tricky like that sometimes you basically have no room for error with such a short vegetative stage. They will still produce maybe not the biggest yield but it is something to expect them to double in size now that they flowering. Don't be disheartened use this as a learning experience to improve on future grows with autoflowers.
Hopefully, this was helpful and remember ..."Happy Growing" and "Free your mind one puff at a time".