Possible revegging or nute burn?

Hi folks,

I'am on week 6 of flowering, and imho, the process is apparently going a little slow. It is a Original Amnesia from dinafem, strong sativa, so it can possible be just a matter of the strain..
Other info:
12x CXB 3590 @50W
Dwc
4x4 tent

I see revegging symptoms (single point odd leaves) and a bit of nute burn.

I would glad your opinion about the matter

So, let the pictures speak for themselves,

It doesn't look like nutrient burn. I would say your having a light issue. I believe your having other issues as well looks possibly overwatered.

light issues or nitrogen overdose,probably n overdose with clawing leaves,but check for light leaks to be sure.