Yes it has worked for me .. but warm not hot . I put lemon and a green tea. Keep topping up whole day. Drink 300ml every 45mins to an hour. More hydrated = more pee = more sugar washed out of the body.

water has to be as hot as you can tolerate, cold water is not good comparatively.

I drink a huge glass of water (normally when I take my meds) when I wake up. Sure helps to rehydrate.

Sorry I do not know what DP means. Drinking water early in the morning is good for your health. I drink a glass of water in the morning. I add a bit ofurther vinegar or fenugreek seeds to help immunity and my joint pain . This helps me. This also good for the stomach. It helps in the bowel movements too.

I have doing this for many years ... half pint warm water on waking up & there after similar amount every 90 minutes through the day till around dinner time ... it goes a long way to keep the system & body functions in some kind working order ....