if you need Medium Of Instruction (MOI) letter from JNTU, Ping me here
JNTU has given a generic letter without Name of the student, indicating all its courses are in English medium only.
so you may use it
This letter is approved by many University's and Immigration, Government and private entities
even though you require a letter with your name in the letter, it is still be applicable,
feel free to ask me any doubts
Could you please send me the scan copy of the MOI to the email ID: email@example.com
Appreciate your quick response, thanks in advance!!!