hey man , your buds are already flowering, add PK when the buds are the size of your thumb. growth rate is controlled by VPD the vapour pressure deficit, which is a relationship between humidity temperature (and atmospheric pressure) so right now it's out of whack because the of the temperature, best thing you can do is get an evaoporative cooler, getting that temp down will accelerate the growth a lot, if you dont get it down you might get airy buds and lower yields. Everything else you're doing is perfectly fine, hope this helps ! 🚀