Auto - preflower/not

Hi there, I have 4 critical purples right now in week 8. I will tell you right now that even them being the same strain are all different sizes. I have one that is developmentally about 1 week ahead. They have all been treated the same. It just varies with seeds. Especially when you are talking different strains. Genetics of these different plants could be completely different from plant height, time of grow, and even what weeks each stage is entered. I wouldn’t worry about it as long as they look nice and green and healthy. And be patient! You are just about at the time where I was asking the same questions and then all of a sudden they started aggressively growing. Probably in week 5 for me. Seems to take forever and then you start looking back at pics and it’s completely unreal the development you are about to experience in the next 2 weeks. Good luck with them!