Hi. I am drinking around 3.5 litre water and my urine is around 1.2 to 1.6 litre. but before bed I drink 400ml to 500ml water But at dawn I do no feel urge to urinate and even I urinate it is around 50 to 80 ml and very yellow in color. After 8am I generally start urinating after drinking water. Is this a problem I used to urinate at early dawn after drinking water before bed also I want to know how much water ideally I should take before bed.