my son is 10 weeks old, about 11 1/2 pounds. i am using sma gold. he has 5 ounces every 3-4 hours, but never seemes satisfyed after a feed. he suffers with colic, but that is starting to get better. it seems like he has a lot of feed in one day, (sometimes up to 8) is that normal? should i up the ounces in each feed, or maybe try hungry baby milk?