Magge i might be miles out, but my gut instinct would be to massage too, my son was born with talipes, his feet turned in, not permanent just the way he was bent inside me ( I'm small, he was big) I was told to massage baby oil into his feet, ie massaging into correct position, it soon righted itself. Good luck.
Shrekfeet newborns only feed small amounts, just very often, anu improvement since the antibiotics?