Hi, I'm new to mumsnet and need some advice. My ds is 4 months old and cries every time he goes to sleep. Until he was 3 months old we used to rock him to sleep, then tried to use the pu/pd method to sleep train him. He eventually goes to sleep after about 15/20 mins (sometimes takes longer) but he basically cries himself to sleep. I don't know what to do, it breaks my heart that he cries himself to sleep everyday and during the day he only sleeps for 30/45 mins so it seems like he is crying for the same amount of time that he is sleeing.