Mummies how much milk should a 6 mth baby drink? How much water? Recently baby screams and arches back while crying, is that normal?

By 6 months, the amount at each feeding should have increased to 6 or 8 oz but the frequency he or she needs would have dropped to 4 or 5 times a day. As for water, you can give your 6 month old baby sips of water whenever he or she is thirsty.