We have a 4.5 month old DS who has never been a good sleeper. He wakes up to 10 times a night and we struggle to get him back to sleep without a dummy. He's now 'found' the dummy in his mouth and is pulling it out which is exasperating the problem. Essentially, he can't self soothe so we are very tired parents!
Our next thoughts are to try the PUPD method to weaning him off the dummy and hopefully teach himself to go back to sleep if he does wake in the night. How have people got on with it??