Wa'alaikummassalam hun! Okay, I can see you're really worried about baby, that's a serious condition and honestly, you really need to follow up closely with baby's doctor or paediatrician for exact timeline, sebab it depends on how severe and baby's response to treatment. Tunggu dekat hospital or clinic, jangan delay, babies dengan respiratory infections ni kena monitor closely, masa feeding, oxygen levels, all that. Most babies do recover okay dengan proper care, tapi timing and treatment really matters. Ask the doctor specifically pasal recovery time, they'll give you a clearer picture based on baby's condition. Sending you so much strength, a few of my mum friends also went through scary hospital stays, and seeing our babies bounce back was the best feeling. Hang in there, okay?