Re: Diary/wheat/sugar free 4 yo
Don't know of any recipes that fit all 3, but allrecipes.com has a "free of" section. If you type in "dairy free" it will bring up recipes. There is a free of menu, but I always end up finding it by accident. There use to be a site where you could highlight the items you wanted to be free of and then search but I can't find it.
Don't really know much about the glycemic index stuff either, but if you get some really sweet fruit make your own popcycles. Just puree and freeze- we do it with strawberries. I think mangos work as well without sugar. Have you ever tried banana ice cream? Slice ripe bananas, place in a single layer on a cookie sheet and freeze solid. Then put in food processor and pulse until you get the texture you want. It will get to ice cream consistency.