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
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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.