Kim you are over watering your plant. 40 minutes every other day is too much. Lack of water and too much water have very similar looks. People see leaves turning yellow and falling off and assume the plant is in need of water but it's acutely begging to stop being watered. Fig rust does not exist in Western states. The air and environment is too dry for the spores to survive. Fig mosaic virus is a big deal out west but I do not think that's what's going on. Try slacking off on the water to only watering once a week and go get a bag of mulch to put around your tree if you can. If you cant get any mulch you may need to water twice a week but the mulch is going to be a life saver for you and help keep your root zone cooler. Good luck and please keep us updated.
