This technique is called "Time Shifting" I had a piece on OG many many years ago and an article in some mags. Folks think you're krzy for suggesting anything other than 12/12 lol. I do it different though. First I add time during peak budset 3-5 weeks then cut to 6 on 12 off until the final three which go 4 on 12 off this adusts time but "adds" growth during budset. With this method you save a week but gain yeild!! All strains aren't happy with this but most are. This is the nutshell version as nutes and temps are adjusted as well. Maybe this can shed some lite on the subject. I also did UV experiments so save your time on that one, lol. It works but results are minimal. If you could set em out in full Sun it will add trikes.