Suggest Treatment For Frequent Urination

I drink 1,5 to 2 liters of liquid/day. I suffer from lack of ADN ? Hormone and so take a pill to stop frequent night urination. During most 3 day stretchesi urinate normally every 4 or 5 hours, but some days bladder goes crazy and i urinate 12 to 15 times, and not small amounts, about 1.5 or more liters in some 6 hours. Its like the body is saving it and releasing at accumulated times. Usually i have 3 or 4 days ok and then one crazy. Appreciate your advice. My uroligist says it my bodies way, but i have my doubts.