Vasopressin is the hormone that is supposed to prevent us from producing urine while sleeping, as well as regulating fluid retention at other times.  It can be overridden, causing night urination, by factors like excess fluid or caffeine, problems with insulin production or usage causing "dumping" of excess sugar, and of course anything that interferes with the production of vasopressin itself.  If you're not urinating for more than an hour after rising, I would suggest you might need a little more fluid, but otherwise it sounds like endocrinologically speaking you're in better shape than before.  Ray Peat could probably confirm.  My night urination problem has also improved.  And odd as it sounds, my early menopause seems to be reversing itself as well - this isn't an improvement I had on my wish list, but I'll take it as a good sign. :-p