My cat gave birth early this morning. The last kitten was born at 4 a.m. and was having a hard time finding a nipple. I tried guiding it to an available nipple but it wouldn't latch on. It is sucking, however, but sucking everything but a nipple. And it's crawling all over the other ones trying to find a nipple. I finally went to bed and when I got up the other kittens were nursing and this one was not. At what point do I give up trying to get it to nurse and bottle feed it? I am really hoping it will start nursing - and I'm not really sure that it hasn't...