Hope it better not be a lab test while you drinking all that water. If ya pee is too clear right off bat you could fail a lab test. Try water and gatorade/tea switch up. But in my opinion, your best bet is substition. If you smoked a quarter yesterday and been smoking for the last 5 months everday, no way in hell that thc is gonna be out cha system by tomorrow. Either have to dilute and hope you pass, or substitute and know you passed.