bottom half slightly yellow

hey guys, growing outdoor strain unknown. Most of the leaves on the bottom half are starting to yellow. they budding but i fed with transition to bloom( Gh flora series) as i think they mmight need some nitrogen, heard yellow leaves are normal when going into flower but wanna make sure

yellow leaves arent normal when going INTO flowering but when flowering is near the end......

you sound right but here is a link to a guide that might help.
https://www.rollitup.org/blogs/blog14176-thread-cannabis-nutrient-deficiencies.html