So originally started 5 greencrack fem seeds from crop king, 4 out of 5 popped and all 4 grew, these plants are in a grow box at my buddys, orginally started under cfl but do to wanting them to grow fasted switched to 150hps, my buddy went away for a couple days and left the box shut raising temps and killing all but 1 green crack, ouch, anyway she came back but then the timer failed, fml, so now he doesnt realize this for 3 days so no phone call nothing now im out of town, he calls me cant fix the timer so I told him revert back to a 24 hour light cycle as we were only down to 20, now my plants a bush, about 1 ft tall and it has been topped 3 times, all shoots are the same height, it needs to go outdoor within the next month in which it will be receiving 15hr of sunlight a day, how can I get the light cycle down to around 15 hours on 9 off without harming her, there is not enough room to let her get much bigger plus my 2 autos are starting to flower in there so I need to get the lightcycle down quickly, help me