In flower can I stop it.

So I went to long before changing over to 12/12 and now to big for its area. I have a bigger tent on the way. Can I reveg the plant to make it bigger currently its two foot tall and just started to flower. And that is with lst.

You can change the light schedule to 14/10 and that will slow the flowering and potentially stretch the plants without the stress of revegging.

You can put the plants under 24 hours of light and they
will reveg to make a bigger plant.