I started sleep training my now 18 month old almost a month ago. I did this by putting him in his cot and trying to shush him to sleep and sat next to the cot . For the first 2 weeks it was horrible . Constant crying and he was very hysterical. The only reason why I continued was because as the days went by I noticed the crying got shorter and less hysterical so I felt there was an improvement. The one night he didn’t cry cry after I put him in his cot . I rubbed his back to sleep. The second night after that was even better . I didn’t have to do anything I just sat next to the cot and he fell asleep by himself . The third night he started fussing and crying a little but I continued to shush him to sleep and rubbed his back. In fact this night was the most surprising because he managed to sleep for the whole night ever . I was so pleased and thought that this method had worked . But then randomly on the fourth night he got very hysterical and it took me about two hours to put him to sleep as he kept fighting his sleep to cry. This is how he was acting during the first week. And today is the firth night since and he’s very hysterical, pulling me to grab him. Again crying like he did during the first few days I started . I have been consistent and always put him to sleep in his cot . I am not sure why this has happened . I’m just desperate and exhausted. I feel hurt at the fact that I genuinely thought this was working but now I’m realising it’s failing . I don’t know what to do anymore