I have three apricots...Sugar Pearls, Manchurian, and another from Gurneys, I don’t remember the name. After a very wet spring and great growth, summer hit suddenly with no rain and temps In the 80’s and 90’s. Peaches are fine, but all 3 apricots are dropping leaves like crazy. I am watering now , but am amazed at the leaf drop. Foliage looks healthy with no sign of disease. Any advice?