I have 23 month old twins, one of whom is a 12 hour a night + 3 hours a day sleeper and the other who is up and ready to start the day at 5am but sleeps 3 hours during the day. A child health nurse said I need to start CC when they were 12 days old! Yeah right.
I am a firm believer in CC and it usually takes my son 2 or 3 nights to get back into a better sleeping routine (no night wakings). He was waking up asking for milk which of course you give into a few times and of course you've started a pattern, so then I offered water which he hated, so then he started putting himself back to sleep.
He still wakes at 5am, sometimes earlier which I find is worse. He's too awake to do CC and he's in the same room as his twin sister who I don't want to wake up. Usually his nappy is full to the brim so I have to change it anyway which wakes him up more.
If anyone has suggestions I'd appreciate them, but can't say it's the birds, light in the room, sounds outside, etc, etc, etc as his sister sleeps soundly next to him. He has toys in his cot (but I have to be careful they don't make too much noise or can be hurled at her). He cannot be resettled even using CC techniques. Suggestions anyone?