I’ve found a few ways to be able to tell really early on if it’s a male or female. I call it “the claw” but it’s a long single leaf that tricks people into thinking it’s a point like a female calyx but when you lightly pull it back you’ll see that it is more like another stipule almost, sometimes they are super long and confuse the grower with what they are seeing, but once you see it enough and even use something to help magnify it you can use these factors as determining sex before you have wasted a lot of time and energy. Herm I guess i thought I could describe that a lot easier but without having one to show it’s a little difficult haha.