I've never heard of dropping feed dogs for a button hole, how is the fabric to advance without them advancing it? That's why it is just staying in one place. My machine uses a zigzag for button holes. Every machine's button holer is different, so its hard to help much without pictures. Maybe you could look up your machine manual on line and print the pages that walk you through the process. I've been sewing for 42 years and still keep my machine manual in the cabinet drawer to refer to when going to do something that I don't do very often