It is incredibly frustrating hearing your situation, knowing that you would be the perfect family to join our mission here! This region has a distinct lack of people who understand the importance of cannabis or who know how to tell the difference between a psyop and a pandemic. That is probably my main complaint about being here, so yeah, frustrating.
On the subject of cannabis our village mayor found a male plant growing next to one of the village car parks. Obviously someone had thrown the seed out of the window of a parked car and it had sprouted. Anyway, the mayor found the plant a week ago looking very developed and full of MALE flowers. His solution was to cordon off the car park for two days and wait till the police came and removed it! I mean, seriously? That's the kind of people I am dealing with here.
I've not had much experience with the hotter parts of the world and what you are going through sounds pretty extreme to say the least, but I wonder if you might be able to create some kind of barrier between the sun and the plants to reduce the intensity? Something like a camouflage net perhaps, or even just cardboard with little holes in it?
Don't know how practical this is, but you could potentially dig a hole? The temperature of the Earth down 20 or 30 feet is relatively constant year-round, somewhere between 50 and 60 degrees. Even if your hole is just 10ft deep you will still enjoy a cooler temperature down there and this would at least offer some kind of protection if the AC goes down.