Autoflowers tend to have leaf deficiencys often, a common thing for these type of plants and nothing to really worry about.. What you can do: put your light 20/40 cm higher up to close out Leaveburn, and add a little nutrients with iron/magnesium / phosphorus. Good luck mate!! ✌️
After the change of photoperiod I could observe that it began to vegetate with more quality, I think it is ready to flower, but I believe that it will vegetate a little bit still
this is my first automatic cannabis, thank you very much for your feedback, I gave a good fertilization on it with 04-14-08 NPK, (in think more than indicated) , so I found this deficiency strange, the first time this happened to her was because I left very close to the COB.