But like only in small amounts. A baby can’t handle constant water. The nursing she is doing should be enough for her hydration. She’s most likely nursing when she’s thirsty but eating solids when she’s hungry.
Yes, you should give sips of water with meals, especially high fibre meals. A couple of ounces at a time is fine and it doesn't have to be distilled or sterilized.
You can give a baby water at 6 months