E.T.
Juice actually signals the body to pee more than water; it's a reaction to the sugar. And since there's no nutritional value to juice, the first thing I'd do is switch to water in the evenings. 10 oz is a lot to drink that late at night. My five year old who still wakes up wet every morning has 4 oz at dinner and that's it. It's really helped cut down on wetting through the Goodnights she wears.