Thanks ladies, you've been extremely helpful, he doesn't seem to wake for up to half of his feeds and the ones he does are the ones shorter than 3 hours between feeds. He's just woken now after 3.5 hours, wasn't distressed just with hiccups and a few moans followed by hunger cues.

He's averaging about 10 feeds a day and just about as many dirty nappies. Do I need to pay more attention to wet nappies or are dirty ones just as good?