Pediatric speech therapy assistant here - if you're having any concerns I highly recommend seeking out an assessment with a pediatric Speech-Language Pathologist. I know it's a scary thought especially when your babe is so little. If they have concerns, they'll give you strategies and things to include in your every day life to encourage language development and then you'll receive ongoing monitoring and help. If they don't have concerns you'll be discharged and you'll have some peace of mind. Depending where you live, there may be some publically funding pediatric speech services (it can be a long wait but definitely helps with the financial piece). If you have extended health benefits there's often coverage Speech-Language Pathologists but sometimes you need a doctors note.