Has anyone fried Nutramigen? And is it good?

My baby had his formula switched to Nutramigen because he’s allergic to cow protein and soy protein. He had blood in his stool. So the pediatrician that saw him yesterday told me right off that bat that’s it’s cowmilk protein allergy. Something like that... she also told me to stay off dairy completely. She said she sees that all the time and most of the time a infants have blood in their stool that’s the main cause. She told me it’s not a bacterial infection or anal tear either. She told me it’ll take time for the blood in his stool to stop. To give it a week or two and if it doesn’t stop to bring him back in. But it should that long in order for everything to get better. She’s so sure that it’s cow and soy protein allergy. Since that 95% of the time when parents bring their infants in