Im a first time mum so unsure what is right and wrong. My 3 week old is formula fed and is having 3-4oz about every 4 hours. He only seems to wake up when he wants feeding and for nappy changes other than this he is mostly asleep. He is occasionally awake for a couple of hours in the mornings so this is when we make the most of interacting with him etc. Is he sleeping to much or is his about right for a 3 week old? At what age do they start to be more awake and alert?