You are likely to test positive (not to pass).
Hi and thanks for the query,
I am afraid the timeline, given the half life of the drug makes it very difficult for you to pass the test. It is true that drinking much fluids decreases its concentration in the blood. However, the time separating the intake and when you have to pass the test, considering its half life, makes it very very probable for you to test positive.
Thanks and kind regards as I wish you the best of health.