Curling up leaves

In your pictures it looks like the plant is reaching for the light. Thats normal. But the yellowing of leave tips and sharp edges is a sign of light burn. When you have light burn it's not the light that is the problem. It's something else that is off causing the plant not to take in the light's energy. Light drives photosynthesis. Photosynthesis = Yield. For the plant to photosynthesis many factors have to be in place to process that light energy starting with Environment: Temperature 70-80F, humidity 50-60%, CO2 at least 400ppm which is ambient air but plants in small, enclosed areas can use up the CO2 resulting in slow growth or none at all. Good Air Flow, using fans and ventilation systems to replace the air in your grow space. Another aspect for Light Processing is your Medium: Microbial Health, Oxygen getting roots, nutrient N-P-K and micronutrients Silca/Cal/Magnesium etc..., Always Always Always PH your water to 5.8-6.5ph. Once you have all these things dialed in you can push your lighting higher and your plant will thrive in it. During night cycle check it then and the leaves may droop instead of reach for the light. The only thing I saw that may be an issue is the clawing of your older leaf tips. Older leaves tend to show signs of trouble first when it comes to Nutrient deficiencies or toxicity. I would give it a few days and watch closely. For the most part the plant looks ok. You can force the Auto Flower into Flowering, if you're ready, by switching to a 12/12 light schedule. Most of this is basic info but with out knowing your Medium, Environement, Feeding schedule, things are difficult to diagnos.

It looks ok to me. If your leaves are curling up then it doesn’t need more light. Possibly over fertilising.