Just wait till he gets a bit bigger and you can see him moving around under your skin! That keeps you awake.
I'm not sure about the routine thing though, mine usually has a big active period in the morning, on and off during the day and then is awake again late at night. He seems to be really active when I'm in the bath too.
I did read that your daily movement lulls them to sleep and they are most active when you are sitting or lying down.