Fastbuds double up

Week 2 of veg and they’ve had there first feed with base nutes on the 26/6/21, full saturation with 2l each. Temps and humidity are fairly stable peaking at 29/30°c and staying around 50-55% humidity. 28/6/21- started lst. 29/6/31- more lst and a feed. 30/6/21- lst and some minor defoliation, OGK has leaves curling inwards at the edges on the top of the plant, I’m guessing it’s heat stress as it states this is a cold climate strain and I’m struggling to keep temps below 29/30°c with this summer heat. 1/7/21- lst and some minor defoliation with a feed.