10 days since 12-12 but they are not tall enough, should I reveg or not?

It has been 10 days since I switched to 12-12 and they started to flower. I have 4 plants and 400+250 watt vertical hood in a 120 cm wardrobe. This time flowering stretch was less than I expected, so they are not tall enough. There is a lot of empty space on the top of the walls and the ceiling. I wish I switched flowering 2 weeks later. What happens if I reveg them for two more weeks? Currently their flowers are just 1” long. 2 weeks of revegging might double the harvest. Will forced revegging harm the plants or cause any problems?