Don't worry too much. 7.5mth vs 3 month is a very big gap in terms of their development. If his hearing was assessed to be normal, he will eventually turn his head at some pt
3 months still too early to do that actually. Since health booklet stated that by 7.5 months majority will achieve this milestone so don't be too worried about it
3 months is still early. Next you will find yourself worrying a lot. I used to be one too. My baby only started to crawl at 9 mths!
3months is still young and he still have a few konths to catch up! I dont remember my 3months old doing anything😂
mine definitely after 3mo