does drinking more water by mother can affect new born baby's health in post delivery period ?

A. nope, must take sufficient amount of water . Have 4 to 5 Healthy meals. Consume more protein rich food, Include more Green vegetables ,Eggs, Millets , Mushroom , Dates, Nuts in diet. Fresh fruits, dairy products. Continue Calcium supplement which is enrich with Vitamin D till you exclusive breastfeeding. Adequate fluids to stay hydrated which includes 2 to 3 liters per day.