@terpproducer, a bit of anxiety and research. The taco curling of those top leaves signified that the plant was transpiring too much (releasing water into the air aka high vpd)) so that meant my temp was too high or the humidity was too low. My RH is typically around 65 or something and I'm comfortable with that. These top buds are pretty close to the light though and I can't lift the light up anymore so I turned down the light to ease the intensity on her. If I think about cannabis in the wild as well, towards the end of their flower they get cooler temps and less light because it'll be past the summer solstice and the end of summer or autumn.
ps im fried atm lmk if this makes sense