Kid is three months old and is one of a set of twins. Mom has been great and the one twin is doing fine with no issues. This kid started showing signs of an issue. She was laying around, not following mom and just kind of lazy. Her tounge was a pale pink and she had no energy. She was eating off mom and no diahrea. We couldn't figure out what was going on until watching her closely for a day. She isn't drinking water and mom is starting to wean her. We can give her a bottle of water and she will drink it right up. The wife and I are taking turns going out every couple hours and giving her water. As long as we do that she eats grass / weeds and acts normal. She has clean water available but just doesn't seem to know to drink out of the trough. What can we do?