Benny, if the mildew problem is severe, use stronger milk concentration, like 1 part milk to 2 parts water and apply everry week.
There is still another solution which is gross but have been proven by some researchers. They use 1 part urine to 4 parts water as fungicide. You can roam around in your orchard with a portable sprayer and garden hose, and loads of cold beer for recharging
No I'm not using this gross technique. But if you see some signs of fruit thief, simply put up a sign that says "Clean fruits were sprayed regularly with urine!" that's really gross for me.