Should I add nitrogen?

In the photos seems like the plant is not getting enough water looking at the lower leaves, so in my experience, that makes the plant eat nutrients from leaves because cant take more from the soil if its not humid enough, and could look ike Nitrogen deficiency but in fact could be the plant cant take the nitrogen present in the soil beacuse soil is too dry. Hope u the best :)

Other than to tell you I think the yellowing leaves are just natural die-off, I agree with everything m0use has said!

Dang man, that thing needs defoliated! It could be that those leaves aren't getting enough sunlight, so the plant mobilizes the nutrients out of those leaves and lets it fall.

High MamaBear, Read this article from RQS they explain it perfect why leaves turn yellow, how to prevent in the future and how to solve this problem now Here is the link: https://www.royalqueenseeds.com/blog-yellow-cannabis-leaves-n523 Happy Growing! 😋