My LO's poops arent always seedy - they are usually yellow to orange and sometimes more seedy than others.
Have you done any research on silent reflux? My LO has that - she gags during and after feedings sometimes. She also crys more around feeding times and acts uncomfortable and arches her back sometimes. She also cant sleep flat and constantly sounds congested. These are all reflux symptoms, but its called silent reflux when they dont vomit. We just started her on Prevacid so I'm hoping to see a difference in a couple of weeks. Sometimes babies with either over eat or under eat with reflux - over eat since BM is a natural antacid but then the over eating can make them more uncomfortable - or they under eat since their bellys are upset - maybe causing slow weight gain. Not sure if this applies to you two or not