If you want to make sure you get clean faster, stop eating shite college food lol. Start eating loads of fruits and vegatables and keep your primary drinks to water/milk and/or green tea like you said. Stick away from too much sugar and fat, as THC is stored in fat and sugar converts to glucose which is then converted to fat if unused. Basically eat healthy and stay fairly active for a week or so and you should be able to pass a test.