Is this nute burn or what my plant is slowly dying and I can't figure out why :[

Shes in week 1 of flowering and everyday I turn the lights on she starts to droop down but when I flip them off she perks back up. I don't know whats happening or what. Cause I havent used any nutes aside from adding more soil to the top of the plant.

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Also I'm thinking she was on 12/12 outside and I brought her home and put on 24 so I think she was reverting back to veg then I put her back on 12/12 could this kill the plant?
 
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