I changed up my watering schedule to in the heat of the day around 4 pm. It helps my brugs and EE's. They never wilt and seem to stay healthier that way. A weak plant, after all is a susceptible plant. Sometimes they get water in the mornings when i deep water the lawn. On those days they don't wilt at all in the heat. I think our water-loving brugs are so much better with almost too much water when it's 100ยบ outside. Of course, if you have watering restrictions, this would maybe make you water them by hand each and every day. Not practical for some, I imagine?
While on vacation one of my potted brugs didn't get enough water and has lost all it's leaves. It is still alive but will need some TLC to come back. The ones in pots typically need way more water than the ones in the ground.