I think she’s way to small to be giving her nutrients.. and 12 degrees is to cold, it needs to be at least 16.
I’m also doing a diary on GG I’m at day 19.
Good luck!
Yeah that looks like a small harvest sad to say. It had a slow start and should have been way bigger by week 6. Your temps are about the same as mine 🇨🇦 So that’s not the problem. My guess is that the soil was too wet for the seedling and it couldn’t grow properly. Better luck next time. 😎