I've figured out the problem! Liebling is as perverse as his mother (caffeine sends me to sleep) - his lullabies wake him up! He was going to sleep in his pram yesterday so I started humming his lullabies, so he associates them with sleep. Wide awake! I hum something else, sleepy again until I change to lullabies.

Night-time, won't sleep for 15 mins of lullabies, but by the third part of the song I made up for him just after he was born he was fast asleep. I stopped rocking the crib too early and he woke up, but wasn't screaming the second he awoke, so I fed him to sleep in the quiet.

Last night he did 8-10.30-2.30, nappy change, 3-6.30, fed in bed until 7am.

The longer sleeps may be routine-related, so I'll just use my singing to get him to sleep for now and start again! But he will be put down just after he has closed his eyes and it works now!