Wow that's a fantastic overnight sleep! 12 hours is awesome. I don't know if you'd be able to get him to sleep longer that that! I wouldn't be waking him up for a bottle if he's happy to skip it - you might find it disrupts the great sleeping that he's been doing! If you'd really prefer him to not wake up until later in the morning though perhaps you could try putting him down at night later... maybe stretch him out by 10mins each night over a week or so?

Kynan goes a bit red in the face and does a bit of grunting when he does a poo too. All normal I think LOL!