Aiyoh mummy, I know it's worrying lah, tapi at 28 weeks baby still punya plenty of time to turn on their own, a few of us went through this and most turned by 36 weeks without doing anything fancy! Besides sujud (which honestly banyak mummies do), try spending more time on hands and knees, swimming helps, and some say sleeping on the side baby prefers also helps encourage turning. But since you're worried, best to chat with your doctor about this, they can monitor baby's position at your next scans and let you know if intervention jadi perlu later on, okay?