Looks a little hot (temp) in there, and the humidity is a little low. Leaf edges are curling up and new growth is probably transpiring too much to keep up, especially with the switch to flower. You'll want to raise the humidity or lower the temp, preferably both. Early flower with a strong indica, you want to be around 75* 65% and steady lower RH from there week by week down to 40/45. Temps can keep dropping down to 68ish with lights on (60 lights off).