Subscribing to this thread because I'm having similar issues with DS who is 15 and a half months. He used to be easy to get to sleep and we were almost in a routine but recently he's really fought against going to sleep and then keeps waking up during the night. I am so tired. However, I co-sleep and he expects to be fed to sleep. He's also getting more teeth, so I've put down some of the struggle to that. Wish I knew the answer, Bugalug!