PJF,
I haven't heard anyone else using clamping devices or the like for night time. Most don't use anything at all except for wearing a Depends-type undergarment and setting the alarm to wake up.
For the condom catheter, I am only suggesting that as a means to staying dry when you leak at night. You should not just use it to "let go" at night. You still get up and go according to the schedule.
Talk to your uro about it but some of us don't think clamping is a very good idea at all. As already mentioned, it can cause complications that you don't want and if you are already having discomfort, that sure seem like a sign.
You are still stretching the bladder during the day with your schedule. Same thing by waking up and going at night. It's not going to shrink up by going nights according to your same schedule but then leaking some.
If your uro thinks otherwise let me know and I'll bet I can find about 100 other neobladder surgeons at top bladder cancer centers that will go kick his butt and bury his office with the research papers that say otherwise.
Mike
Age 54
10/31/06 dx CIS (TisG3) non-invasive (at 47)
9/19/08 TURB/TUIP dx Invasive T2G3
10/8/08 RC neobladder(at 49)
2/15/13 T4G3N3M1 distant metastases(at 53)
9/2013 finished chemo -cancer free again
1/2014 ct scan results....distant mets
2/2014 ct result...spread to liver, kidneys, and lymph...