There no way to reverse time on an auto. And in general when plants are flowering, its too late to do much correction. Gets ome photoperiod seeds then you can grow bigger plants even if they suffer some of the stunting from issues common to new growers. quility will be better and you can clone them.
Just keep growing, don't go overkill ont he light because it's not nessisarya tt hat size but hopefuly you still yield something decent. Since it's auto, atleast you could throw any kinds of seed next to it for the next round.
The overall health looks ok from what i can tell by the purple pics.