willow5 Dont beat yourself up hun, sheer exhaustion is hard to deal with but feeling like there isnt a light at the end of the tunnel is just awful I was certain my DD wasnt going to sleep through before she was 21! She was much like your DS at that age and pretty darn bad from about 4 months ( we had the prefect newborn!) Then at about 23 months she just did, I dont know why, it just happened . So she went from being up several times a night to sleeping about 11 hours straight. I guess Im trying to say that it will happen and it might just come out of the blue! Hang in there because this too shall pass