Thank you for your query.
We would have appreciated if you had mentioned the treatment that you are giving to your son which would have helped us in providing a better guidance. However the recovery of 30% is very good and you should continue the same. The pigmentation over vitiligo
is very slow, if it occurs. So to reiterate kindly continue with the same treatment and do not change it.
I hope I have answered your query to your satisfaction.
Wishing your son an early recovery.
Rajiv K Khandelwal