L.A.
I would try a little chamomile and peppermint tea (together). This always works for everyone in my family including my 16month old.
I would reevaluate his diet. Dairy is the main culprit of excess gas. See what happens if you eliminate it. Try alternatives like almond milk, or a good quality yogurt. Don't increase the juice (actually eliminate if possible). A 2year old doesn't need the sugar. Instead offer the real fruit like blueberries. They're in season now so he should love them.
~L.