Oh I dream that I need the loo if my bladder is full and I am deeply asleep.
Usually if people have renal conditions they are not able to drink very much. But the body will expel liquids during the day as necessary. One can take on too much which will dilute the essential minerals etc. which can lead to death but that is drinking lots and lots and
. One would usually feel nauseous !
I find that if I get up at once and pee then I don't lay awake waiting for my bladder to fill completely.
Could that creeping up your legs be an adrenaline rush? Not nice!
There is a valve or hormone or something which supposedly means the bladder shuts down at night so we don't need to get out of bed as often, however, sometimes this 'fails' so medication can be given.
Your amount of intake is a lot on top of what your diet includes. Water companies were trying to encourage folk to drink 2+ litres daily