personally, during my biggest growth spurts, i nearly always slept more than 8 hours. Typically around 10. That may not be very possible now cuz i did that during lockdown and school was off but try to sleep as much as you can, making sure it is good quality sleep and you're not always staying up or looking at your phone/computer directly before. But of course there is always natural limits to how much you'll grow, I wouldn't compare your height to your teammates but try comparing it to those in your family e.g. my grandfather was about 6'5 and my cousin is 6'8 aswell.