Hi - my little one is 8 weeks old and has been on the C&G hungry formula for about 3 weeks now. She was born at 8lb 10 and is now 12lb and has always had a good appetite. At newborn she was taking 3oz every 2 hours. It was obvious she wasn't full after feeds with regular formula, regardless of how much she ate and even if she had water between. She kept whinging for more, didn't get sleepy during feeds, kept sucking for more and then needed feeding again soon after. She now takes around 9-10oz a feed and has this between every 4-6 hours. She has slept through nights for the last 2 weeks.
The only thing I will say is try and get water into them (either through extra in milk or between feeds) to help the digestive system with the hungry formula. As it is slightly 'heavier' than the regular, it can make them slightly constipated. At least that's what I found and this is what works for us!
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