Flowering back to Vegatative

If your plant has gone into flowering a lot earlier than you wanted it to when you didnt mean to make it, and its way shorter than you wanted it to be before switching over, can you switch back to the vegatative state?

Yes, Sometimes it takes a long time for it to revert back. Like month

It'll work.
You know the little plant you started flowering should double or triple in size in the first 2-3 weeks of your photo-period switch, right?