A little sleep (or rather wake) tip ...

Being a dad of a 4 and (bad sleeper) 3 year old, and with both parents working, sleep is always at a premium. The words "it's your turn" at 2am is not what you want to hear, and are usually followed by "no, I think it's definitely yours". Both parents end up awake and grumpy. So here's a little tip from a friend in the same boat.

They have a standing agreement that if the child wakes between 12-5am it is Mum, otherwise it is Dad. Simple. No arguments.
Another variant is "odds and even hours". 1:37am is Mum, 2:42am is Dad. Same principle. Or just alternate days.

The most important thing is to have a standing agreement, not leave the decision to a middle of the night negotiation.

Sweet dreams...

-Jamie