Besides the occasional shifting and soft murmuring in his sleep, Vash doesn't move much more than that. It doesn't seem overly peaceful, but he doesn't seem to be awake either.

It will be towards dawn when the first boy starts to come awake that Vash wakes up himself. Instinctively stirred awake by his child's needs. Automatically trying to get up gently. So use to trying not to wake up either Titus or Cyril when he first wakes up. Forgetting he doesn't need to do that with his brother.