Растение после определенного времени показывает пол, на твоём фото показатель женского растения.
Если ты перевел на 12/12 ,то таких усиков будет через несколько дней много и по всему растению.
Your looking in the right area looks like they are just starting to form. This is showing her maturity and that she's ready to begin her flower stage when the lighting become right. A few into flower you'll see that white hair pop out showing you she's a girl. Or a cluster of nodes that look like grapes. These are boy parts and not what you want! Cheers and happy growing!