Hi
My Amnesia Auto from seedsman, is having some yellow leaves from the top, so it cannot be Nitrogen deficiency.
It’s already in week 5 of flowering and around 2-3 weeks to go. I am following greenhouse feeding schedule.
If you only have 2 to 3 weeks to go theres no need to worry about leaves unless spidermites are attacking. 2 weeks to go, take all your fan leaves off let the light in and let them breathe.Cheers friend