It sounds like you have made some massive steps in the right direction already, WELL DONE!! We are going to be going through the same thing over christmas as well. There have been heaps of great suggestions already but I wonder if you would me making one too. No matter what you and your DH decide you have to be consistent. Consistency is the key - we learnt this the hard way. Set a night time routine so they know what is happening as bed time approaches. When settling your kids make sure that you and DH do exactly the same thing so that your kids know what you want/expect of them. They say you need to give at least three nights before you see any improvement/change. My kids are so stubborn it took us a week. Wishing you the best of luck. YOU CAN DO IT!!!