If your spoil drains well you will be fine. That sativa will take as much water as you want to give her. 35 degrees c and crazy winds too. She should naturally be sending roots down looking for water pockets. Maybe get a feel. Hammer a wooden stick into the ground. Amd leave it a day and when you lift it out, it's going to show you how deep the moisture is. Like a dipstick.
Then you just pop it back in and carry on living your best life.
Then you just pop it back in and carry on living your best life.