I have picked up a nursing bottle that has a nipple the size of what rabbits nipples are and I am going to pick up some goat milk today. What do I need to add to the goat milk to keep them thriving. Heavy cream? I don't think they will need the colostrum beings they are 4 weeks old and were with mom up until yesterday. They are eating pellets here and there so I know they are in the transition stage but still need milk for another 2 weeks at least. I am also taking them to the vet here soon beings I don't know what caused mom to die.