8 week old formula fed question


My baby girl was born July 9th and is eight weeks old. I've been a little worried about how much she is eating. She is eating six ounces every 2.5 to 3 hours, and my doctor has even told me "she is eating far too much way too often. You need to let her fuss and cry and try to comfort her with a passi before feeding her that soon." However she cries so hard she loses her breath and can't get it back, I try to comfort her with the passi and it makes her madder, and nothing calms her down until I feed her. I honestly don't know what else to do, but I'm worried she is eating too much. However, I do not believe in letting her cry. It breaks my heart and I honestly can't do it. Have any of you mommas gone through this? What did you do?