I have used crumbled tofu with an FTT chick and it thrived. It was way behind the other chicks. I fed tofu sprinkled with Poultry Nutri-drench to all the chicks so the small chick would be stimulated by competition to eat. Tofu is a high protein food, very easy to digest. You can also get strained baby food or baby bird formula which is sold at pet stores.