A.P.
I did this method with both of my boys and frankly...I don't see the downside!!! 45 minutes the first night, 10 minutes the second, and 1 minute the third then PEACE!! My boys are incredibly independent and sleep like stones to this day! My SIL thought this method was barbaric...with three children now who get up in the middle of the night, she actually has health problems due to lack of sleep. I think you are doing great, keep up the good work! Also, my boys would go months sleeping through the night and then wake again and we would have to do the CIO method again but it never took as long, so 19 months is not too late!