the only suggestion i can offer, should have stayed with 24/0. though some people go 18/6, you'll have faster growth with a 24/0 schedule for now. the only reason people decrease the light cycle is for faster 'root' growth. so if you are going to give them a light break, take it to 18/6, it has been proven that the best cycle if giving a rest period is in fact 18/6.