It can be done, just leave some some leaves and some of the lower buds on your plant and put it back under an 18/6 or more light cycle. But, if you have seeds there is no reason to re-vegg a plant. It takes about a month or longer for anything to happen and then you would still need to let it go a little longer to be able to flower it again.
The only good reason to re-vegg a plant is if you really like the genetics and want to keep them around, but you have seeds, so that isn't an issue.
If you have extra space in your vegg area you can do it just for kicks, a re-vegged plant looks crazy when it starts growing again, there are branches everywhere.