Only a one leaf curls unexpectedly

for watering yesterday, sure looks dry AF. More light is not necessarily always a good thing. Your local climate and ambient co2 levels in atmosphere will dictate how much light you can give per day... you can be given basic values to target initially, but you must engage in some trial and error to fine-tune it. 35-40 dli. there are free apps that can help. tables/calculators online. wiki to explain details (Daily Light Integral). if you are now providing the upper range or higher than 40, good chance it will eventually cause some issues with the plant. Could be why the top leaves are droopy. "more" is not the goal.. the right amount is the goal. Internode development can guide you (tight vs lanky). Recognizing the plant is shutting down for several hours is another (droopy) can help you adjust too. Visible physical damage takes time and should be able to diagnose it before that point. Most lights nowadays are tuned for 18h and 12h operation relative to recommended area of coverage. So, giving 1/9th more or 11.1% is only necessary if it's a weak light or trying to cover more than the recommended area. That funky leaf - did you spill something on it? otherwise meh. New growth looks fine, so it's in your rear-view mirror. probably fixed with better watering habits. It sure looks like you are doing something weird with watering. if the pics are up to date with you description, sure are dry AF relative to watering yesterday. 1) fully saturate entire medium 2) wait for appropriate dryback and repeat. Don't choose the volume. you give what is required to accomplish the task. If you repeat at same loss of weight, it will require same volume. If soilless, get an extra 10% runoff, religiously. coco based substrate should have at least 30% perlite and something similar to soil should have 50%. if ever normal watering practices cause a problem, it's almost certainly a poorly constituted substrate. don't overcomplicate it. Let context dictate how much to give and when. this is not a top-down context. Superficial watering only leads to shitty rootzone and risk of problems... ph-swing could have caused that funky leaf, for example. varying growth rates cause waves/twisting.