articleship and extension

Aastha Agrawal (121 Points)

18 April 2018  
hello everyone!
i will be completing my articleship on 26th april 2018.
I have also appeared for exams in nov. 17 nd now will be appearing In may 18.
My query is, can my boss mark my articleship extension?
(he has already signed my certificate of service). even after signing that COS can he extend my articleship?
he is in the plan of extension for 3-4 months.
so can he do so?