Assalamualaikum! Aww, kesian baby dia batuk & selsema lama macam tu Please check with doctor dulu ye, especially if cough & flu dah lama tak hilang, better safe than sorry. Once doctor confirm okay lang, boleh cakap dengan dia pasal home remedies, tapi jangan apply minyak apa pun on baby's skin/chest without asking doc first, okay? A few of my mum friends kena tegur sebab baby's skin is very sensitive & some oils boleh cause irritation. Get baby checked first, then you'll know exactly what's safe for her! Lepas tu boleh settle dengan confidence