There is no guaranteed way to tell what strain the weed is lol The only way to know what strain the plant is that you bought it on an online website with a specific name.
If that was 12d from seed i would take a cutting and reveg it. Throw it under a real light and have a day . looks like great genetics too me. Brid on the indy side
Killing it with cfls! LED indoor - https://forum.grasscity.com/index.php?/topic/1394646-Pure-AK-barebulb-cfls