Double checking

So on this plant. I have 1 fan leaf that's going pale greenish almost greenish yellow. Very bottom lowest on the plant fan leaf. Just the one. I was thinking needs a little bit of nitrogen because I feel I may have switched from veg to flower nute regiment a little soon. Only half way threw flower now so I shouldn't be yellowing off yet. Just double checking before I give a shot of nitrogen.

I’ve had this happen on every plant. It’s fine.

very bottom leaf? i wouldnt worry about it

Yep very bottom. Usually o wouldnt get a yellow leaf til end of flower. This ones only half way through

Plant looks healthy.

Ty. Wanted to make sure