Hi...Thank you for consulting in Health Care magic.
I understand your concern.
I have few questions and suggestions for you -
1. What is his 
birth weight and current weight?
2. When did he start walking?
3. Did he cry immediately after birth or did he require any special assistance to take the first breath?
4. How long does he see television or tablet or cartoons per day?
5. Did any one of the parents' had a 
speech delay as children?
6. How many word s does he speak as of now- I mean his vocabulary consists of how many words?
Please get back to me with answers to the above question so that I can guide you better.
You can approach me at the following link.
Once the page opens there will be an option below my image as – ASK ME A QUESTION – click on it.
Please find the link below -
www.healthcaremagic.com/doctors/dr-sumanth-amperayani/67696
Regards - Dr. Sumanth MBBS., DCH., DNB (Paed).,