I had a standard rex doe pass away yesterday. I am following the directions off some site and trying to feed them 7ml of goats milk twice a day. They have absolutely no interest in taking it from the dropper, syringe, or little bottle. They turn there heads away, hop around, and refuse to suck once it's in their mouths. I have no idea why. They should be drinking it and since they are a large breed rabbit they should be drinking a lot. Help??