should I put the lamp closer? what problems do you see?

Hi, There are I think 3 things possbile out of the top of my head. It will happen nothing and she will grow just as good as she does now. Looking good and healthy. You could probably see some heat stress on the leafs or buds, if you should see that just move the light back. Or she will get more hungry because she will get more light so you could propably ramp up the nutes a bit. As long as you adress her needs everything will be fine. She is looking good so you could do it. I am always between 30-40cm depending on their stages. It's just best to lower the light every 2 days by some cm. Hope this helps.