Lol, revegged plants are fine, it's best to wait for new regular leaves. If you can't for some reason and that's your only plant flower it, it could Herm tho as she is confused atm.
Revegging causes no harm it just sometimes takes a while, that one doesn't look too bad tho not like revegging a finished plant which can take a couple months.
If you want the best healthiest plant wait til it's showing regular leaves, but she would still grow out some bud if you flipped now. I tried dropping to 16 hours for veg on current run from seed. I had 2 out of a bunch of plants that started flowering under 16 hours, I bumped it up to 18 hours after I noticed and then flowered two weeks later, those plants are a little smaller and leafier than some of the others but still look to have a decent amount of pretty nice buds.