S.S.
Hi J.,
I was just wondering why you are taking the binki away? That could have something to do with it. Have you tried to let him keep the binki and see if he sleeps longer? There is nothing wrong with a binki, it is better than sucking a thumb. You can take away a binki later, but you can never take the thumb :) Just a suggestion.
My son had one until one month before his second b-day and we never had problems, not even his teeth.
Good luck and let me know
S.