demand feeding a big sleeper

[Kmn]

The first thing is if he is weeing and pooing and growing then you can probably leave it as it is.
But if you want to feed more then it's OK to wake him during the day for more feeds too. And if he isn't gaining weight then you actually need to wake him and feed him - which will then help him learn about the differences between night and day too.

There are two reasons for sleepy babies:
1) they are full and happy and generally placid (great!)
2) they are sleepy because they haven't got the energy they need to be more demanding (not so good).

So you need to make sure that you do not have (2) happening!

[onthefly]

Is everything looking good right now? If so, your'e probably ok leaving it so longas as you're still getting lots of poos and wees and weight gains. It is quite likely that he'll 'wake' a bit more in the coming weeks so things may change on their own. That's what my DD did
The unsettledness in the afternoon is normal of course, and the cluster feeding all counts towards total feeds and helps him to go longer overnight. That's your payoff there so I wouldn't discourage it