I had this issue on a particular strain on my first grow also. It seemed like I could not give the girl enough water and she drank faster than all of the others. I would make two suggestions which have already been mentioned (1) Reconsider your growth medium. I used miracle grow soil which was very compact, yours also seems very compact. I haven't had this issue with the drying and premature curling of the leaves since I switched to foxfarm ocean forest exclusively. Right now I'm using it straight but my next round will be mixed with added perlite and peat moss for more aeration and water retention. (2) give the plant some nitrogen (veg nutes) for at least the first 3 weeks of flowering. Some may disagree with me, but IMO this is a mistake many inexperienced growers make including myself. Towards your harvest you will naturally start losing some lower fan leaves, but let them die, don't pull them prematurely as they are important for photosynthesis. Overall your plants look very good for your first grow, keep up the good work and keep dialing it in.
Those look tasty!