It always best to take time out at feed time, and go throught he routine with him, instead of giving him the food on the floor, make him come to u, feed him with the bowl in your hands, and raise it slighly, so he has to reach up a little to eat, then simply raise the bowl to a higher level, tell him to sit and wait, then lower the bowl again, for him to continue eating, this way he assosiates sharing the experience of eating, he must be in close proximity to you, to get what he wants (the food) and he will associate you in the equation in a positive manor, as the food is seemingly coming from