I'm sorry to hear that, buddy. How about pureed pear? Pureed carrot? (I'm thinking of those new-fangled baby foods that come in pouches--maybe something in that line.) A yogurt of some kind? Even a milk or fruit juice (orange? pineapple? mango?). Coconut water? Straight up water.

Obvs you might need to fiddle with the amount, depending on how liquidy your new liquid is.