Hi, this is my first grow and I’m practicing with a bag seed before my order of good ones arrive. I’m learning as I go and I’m about 7 weeks in and my plant is showing no signs of sex (that I can see any way). I switched it from 18/6 to 12/12 a week and 1 day ago. My fan leaves are huge and the plant appears to be growing great except for a bit of leaf curl from a hot day with high humidity. Any advice from experts would be much appreciated. I have attached photos.