Glad to see your on top of sexing. I’m guessing it’s safe to wait a bit longer for the sex organ to develop and get bigger. But if you don’t want to waste nutes, space, time on a male I see why you want to identify early. It’s too small for me to tell. Females have a cone looking organ with a pistil hair later. Males have a spade shape organ early on. You want to get rid of males before the organ looks like a banana. If other plants are showing as females you can compare against them.
That thing is so young it cannot hurt ur grow right now assuming you have other females. A male part kinda resembles a bird beak with a under bite is the best way for me to describe it be patient it will come.
( FYI that looks like a male. I am seeing the “underbite”)
I've noticed that the beginning of female flowers sit right down on the stem. If there's any kind of discernible stalk, it's probably a male flower. You can see this pretty well in your early pictures.