We are taking care of 5 orphaned kittens right now. We got them at 3 weeks old and they are now 8 weeks. You need to feed babies about every 2 hours and when they are about 3 weeks, feed them every 4. Talk to your local humane society (if you have one) and they should help. Use a warm, wet washcloth on it's bottom to stimulate bowel movements. Get on the internet and do searches for babies and make sure you keep it warm. Also it would be a good idea to put in a stuffed animal about the size a mother cat would be to sybolize a mother for the baby. That's all I can think of right now.....hope you can take care of it!!!