Babies not good help!

BUT THREE DAYS INTO 12 12 AND YOU CAN SAY ITS BEEN PRETTY HOT LAST CUOOPLE DAYS AND IT STARTED GETTING LIGHT BROWN AT FIRST BOTTOM LEAVES TWO DAYS LATER THERE HURTIN AS YOU CAN SEE CAN ANYONE TELL ME WAT THIS IS WAT I CAN DO TO BRING THEM BACK IF PSSIBLE ANY ADVISE PLEASE THANKS FOR YA TIME!!

Your soil looks a little dry. How often do you water? Nutrients? Etc.

Yes, water them. Also it looks more like nute burn that heat stress only.

They will live provided you take the right steps. I've seen worse make it out to bud great buds.

Is there enough drainage in that blue bucket? I find that watering at the right time can make a big difference for everything including bug control.

well first of all use som pHed water to water them because they are dry and droopy.. and stop the nutes for a couple of waterings because its most likely a burn.. when it's hot you can mist them and then water them with some run off to keep them cool just keep checking the wetness of the soil because you don't want to let them dry out too much..

stop the nutes and flush with water, use a little hydrogen peroxide in the water if u have it for oxygen, after the first good flush just keep them on water for a week or two, trim all the dead leaves.