If birth History is normal and all other mile stones are normal for age, Then one should look for local cause Like tongue tie Or problem with the palate.
Next Steps
Have opinion of your routine paediatrician for tongue tie, and if Needed, Have opinion of Paediatric Surgeon And speech therapist if required.
Health Tips
If everything is normal, as mentioned above, Parents should keep on talking to the baby by acting as a speech therapist. Few children Might speak late.