Thank you for posting your query.
It is very difficult to answer your queries without having the full clinical data.
We need to know the cause of his seizures and developmental delay. Is it because of complications during delivery, or any brain disease or a metabolic abnormality? We also need the findings of MRI
brain and EEG.
Having said that, most children with developmental delay would lag behind their peers and would never become "normal" for their age. But they would get better over time.
However, good seizure control with medications and specialised training would help the child a lot in getting better.
I hope it helps.
Dr Sudhir Kumar MD DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad