Curling up

Hey, so as you can see these these tips are curling up and maybe burning up a little. So I live in tropical regions and it gets as hot as 40 degrees C in the day. It gets about 6 hours of direct sunlight, six hours of indirect and I put it inside under a 100W LED rest 12 hours p much. Do you think this is because of the heat or is there another problem? What does it look like to you fellas? What do you think should I do?

Fertilizer. Minerals. Is there adequate drainage?

That plant is kinda young to use this chart but will help.
Look at calcium, magnesium and phosphorus deficiency as well as Nitrogen.

I would find a mild grow fert like composted chicken manure or fish emulsion to feed with. Some dolomite lime too.

And unless its an auto flower, once its fed well, it will out grow that pot size quickly in veg.