G.R.
It took my 3 year old a month to adjust. I wouldn't give it back since it has already been two weeks. It will just be confusing to him. Continue to comfort him, rub his back, lay with him. It really is a big loss because it was so comforting but all good things must eventually come to an end. Hang in there it will get better, just what ever you do, don't go backwards!