This sounds very familiar.
I have exactly the same problem except my daughter is 18 months old and will on occasion sleep 2-3 hours before waking, crying, wanting a boob in her face. Much like her father.

I'm going to try this when I'm a little less exhausted:
drjaygordon.com/attachment/sleeppattern.html
( crackhouseceilidhband Fuck off back to Mumsnet, Fri 13 Jan 2012, 13:38, 1 reply, 14 years ago)

Sounds similar to what we are going to try, except we will put her in her cot for it not in our bed.

( Fucking hell Jeff I am not a robot, Fri 13 Jan 2012, 13:45, Reply)

I'm too lazy to get out of bed and lift a child into a cot.

( crackhouseceilidhband Fuck off back to Mumsnet, Fri 13 Jan 2012, 13:47, Reply)

I will have to do this bit.

( Fucking hell Jeff I am not a robot, Fri 13 Jan 2012, 13:48, Reply)