hi i have 4 kids and my ds3 is 27 months he constantly wants to drink juice as soon as he finished he throws cup at me and pesters me shouting for juice all time till i give him some i have tried putting smallest amount of dilute juice in cup and water it down but he refuses to drink it like this and keeps chucking cup till put more juice in and if i sayi no cause he just had some he shouts and keeps saying juice juice juice he always wets through nappy as he drinks so much please help