Hello
First off good job on trying something new, it's challenging but important to keep testing new grow methods. I started my 1st coco grow and it's stressful lol.
So I would say if you have the ph of the soil in the correct range then keep using some low dose fertilizers. You're still having a lot of white pistils and probably have another 2-3 weeks left at least. So I would continue feeding this week and then see how it's matured and then keep reevaluating.
I'm not sure how strong the led is youre using, but keeping it at least 15 inches away will hopefully spare the leaves from getting any spreading burnt leaves.
Happy flowering. ✌️