3 in 24 hours isn't enough surely? The rare occasions I've seen a morning poo in a wee-filled night nappy I've almost been sick. Bleurgh!
I don't think there is a difference between a morning poo and wee filled nappy and a dry poo filled nappy, neither are very nice to look at.
Ds poos like clockwork, in my opinion it would be a huge waste to put a fresh nappy on him just for him to poo in. We change him as soon as he poos so he isn't sitting in it.
His nappies dont leak and he doesn't get nappy rash so I don't see the point in changing him more often, he is a very happy baby so the infrequncy of nappy chnages doesn't seem to be making him unhappy.