hello aspirant,

It is quite complicated to change the date of birth in SSLC hall ticket after the exams are done as it is too late for that.Any changes that has to be done should be done before the exam itself and now your 11th or whatever you are going to pursue after your sslc details will be based on your sslc.so try to always change it beforehand.however once try contacting your school and ask them if its possible and if there is any process .

hope this helps,

thankyou.