I've successfully re-vegged a couple of times, (perhaps 50...75 times...? perhaps more, IDK)

Put 'em on 18/6 under proper lighting, flush well to remove the flowering nutrients remaining in the soil, put 'em on growth nutrients, leave anything that grows alone, and if you want more info, there's a link in my signature detailing the bonsai-style root pruning and re-vegging process. Damn near foolproof. :thumbsup: