When you increase your fluid intake, you'll naturally have to use the bathroom more often. Also, if you are drinking tea that is caffienated...that will increase your trips to the restroom AND decrease the efficacy of the Valium's ability to get you to sleep. Caffeine works against
drugs like Valium. I would switch to a decaffienated tea.
I use 2 mgs of Klonopin to put me asleep now.

TGC