Nitrogen deficiency?

Hey guys today marks week 3 day 6 of flower. I’m rocking 3 cherry pie photo periods from seedbank.co. As flower moves along I’m aware minor nitrogen deficiencies occur naturally to these plants as they near the end of their life cycle, however I do believe my prizes pheno out of this run is perhaps experiencing this deficiency much faster than my other 2 plants? I’m using reused fox farm ocean forest soil (2nd and final run with this soil), Sensi grow PH perfect A + B, Calmag, and Big bud as of right now. I’ve gently pulled 90% of the dying leaves off as we’ve had so much rain recently the humidity in the tent is hitting 75% and maximum airflow is my best hope. Any ideas as to what could be causing or do you think this plant is still on the right track? Let me know what you think I’d really appreciate it!

Id try and figure out why its raining in my tent lol jk. Those look N toxic to me

Your plants look well fed and healthy. It's normal for lower fan leaves to yellow in mid and late flower. If it were me I wouldn't change anything...