My DD was also a chucker of huge preportions, as she is a bottle feed baby we chose to include thickener in her feeds and over a few days of trial and error we worked out the best for her was double the recommended dose in order to keep her feed down and to also allow her time to play flat on her back and also have tummy time. She will sometimes still have a spew but this is like maybe once every week and a half to once a fortnight, whereas before it was before, during and after feeds.