My LO is 6 weeks old and didn't start spitting up until she turned 3 weeks old. She spits up anywhere between 1-6 times a feeding! Sometimes it's just a little spit up, sometimes it's a lot of spit up. I've asked the pediatrician and she recommended feeding her half an ounce less than what I normally feed her (I pump and then bottle feed), sit her straight up when I'm feeding, and burp her every half once. I've done everything and yet she still spits up. Does anyone else have this problem?!