I am not drinking as much water as you probably 30-40 ounces a day. Before the prostatectomy I did not drink much water. i do not drink soda, or alcohol or mild just coffee and water and now I am off coffee. I guess I am a light water drinker but am drinking more now -intentionally- in support of bladder re-training.
My doctor is really not keeping track . I was advised to shoot for going every two hours whether I needed to or not. I try to do that most days and like you stop the water around 5 or so So I can get some sleep at night.
However, most nights I am up every hour or two. I have learned the hard way not to try to bladder train when i might fall asleep.

Have others on here given up coffee or have any information about coffee and incontinence. I read that coffee can be an irritant so stopped. I missed it. But I will gladly forego if it will interfere with getting continent again.
Thanks everyone