Premmie Baby’s Development

Hi mummies. I’m a 1st time mum, today i went for my child’s development check up (he’s a premmie btw corrected age 10 months) and was told his height 69cm is abit of issue & he still don’t have teeth yet - was informed to monitor and because of this next appointment will be in 3 months time and doctor said if still no teeth they need to investigate and refer to dentist. Not so sure but should i be worried? Pls enlighten me 🙏