My wee boy is 6.5 months old. He's been taking baby rice, pear, apple, sweet potato and butternut for about a month now. However this last week he simply refuses to open his mouth for food, he cries, get's upset and even pushes my hand anyway if I go anywhere near with the spoon. I'm feeling terrible, like I've done something wrong. I don't know where to go from here. Do I go back to the beginning and start again?