Yellowing leaves on 3 month old plant

[Mandingo]

This plant is 3 months old and some leaves are turning yellow already. Please suggest any helpful tips. I'm wondering if this is Nitrogen deficiency and if it is, what solutions are appropriate at this stage. Pls I'd love organic solutions. Ask any questions

[Mandingo]

[Mandingo]

Please, bear with me while I send more pics

[Gluteous]

Looks like she needs a haircut. How long has it been in flower? Indoor or outdoor? What are you feeding it?

[Mandingo]

She started with 12/12 and started showing flowers in week 3-4. I only added cow manure at the beginning of the grow. Outdoor

[SoOrbudgal]

Well here goes my thoughts and it looks like revegging. Went into flower now reverting back see the single leaf. Also most likely bugs within those colas. Now your going to ask " what can i do?" I've been through this an won't try an save another reveg it takes months for her to recover outdoors. Lots of special work on her. Photo plants have to have more than 12hrs to not flower. Sorry