Attempt due for ca-final

Dear sir,

I joined for articleship at 03/10/2017 after both group in May-2017,

and taken transfer from 08/12/2017 and re-join new firm at 29/12/2017 .

Also I have taken 11 days leave in my articleship till now.

My question is whether I am eligible for final exam in May-2020 and how many leave i can avail including examination leave for final  during my remaining period of articleship. 

Please help me .

Thanks in advance.