I also had a dcg that loved and ate a lot of fruits (and everything else) and she got an ear infection. The doctor gave the mom the option of giving her antibiotics or just wait and see if it would go away by itself. Since it was a mild infection mom decided to wait. I google more about it and see how else I could help her naturally. I found several recommendations to prevent and help with ear infections and one that was very common was eating raw vegetables and fruits. So mom and I gave the girl more fruits and raw veggies than usual. The ear infection went away by itself.
During morning snack I gave them different kinds of fruits every day and milk almost right after they arrive at 8:30. Since these are the only options in the morning most of them eat a loooot of fruits and usually they decide to drink only some sips of milk. Some new kids that are not used to fruits at home during the first days drink more milk and little or not fruit, but almost every body has catch up.
On the other hand my hubby had condition and was refereed to a nutritionist. She gave us a course and then we had some 1:1 appointments to customize our meals and make them healthy. She told us that we better should be eating whole fruits. She said that when we drink the juice we are drinking the sugar of the fruits mainly. My hubby go better by the way just from changing our eating habits after he was told by the doctor he could have a heart attack anytime.