Waalaikumsalam sis. 1. Mungkin sis boleh cuba buka any lullabies. Mcm rain sound ke anything yg related. 2. Tak sure what the best way but maybe tips ni dapat membantu sis: https://my.theasianparent.com/pola-tidur-bayi/?utm_source=question&utm_medium=recommended
Tq sis