Hello there! I hope you don't mind me saying, but your lights might be too close to your plant. 20 cm is too close for any LED light. Your NE's leafs are pointing upwards and this is an indicator of too much light! You can read more from here: https://www.growweedeasy.com/how-far-grow-lights#led-grow-lights-distance-plants and here: https://www.growweedeasy.com/cannabis-light-burn
I would really like to see you cropping that plant. Happy growing! 👍
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