I'm right there with you. I have a girl who's been off food since January. She is 1250grams also and had never refused a meal beforehand. I think if they start to lose a significant amount of weight, I would look for an option to get them some nutrition. From what I gather (from reading other posts/threads) they will start eating again when they are hungry. I keep offering once a week. she'll have to take food again sometime.