Hello,
Some children growth is delayed and they catch up with time. If your child frequently falls or has difficulty with stairs, drools persistently or speaks unclearly, can't build a tower of more than four blocks,can't copy a circle,can't communicate in short phrases,doesn't understand simple instructions,shows no interest in other children,makes poor eye contact or has little interest in toys at 3 years of age he has developmental delay.
Next Steps
Contact nearby psychiatric clinic for help. You may need to see a occupational therapist, speech therapist, clinical psychologist. A team work will help your child to learn.
Health Tips
There are certain activities by which you can teach your grandson at home as well. These activities can be learn at centres which provide you all these facilities. Best Wishes.