I'm not sure if this helps, but at around 4 months, DS was VERY distractable on the breast and went on a bit of a nursing strike for 1 week. I ended up breastfeeding in a quiet, dark room, with no distractions (door closed, no music, nothing). That is how we BF'ed for the next 10 months. So I don't know if you've tried that already. Good luck.