Government Polytechnic Pune

Hello Shaikh Museb, even though theoretically possible, practically it's next to impossible to do what you are desiring. It's actually transfer from one institute to another. Right? You can begin by asking administration staff of your college about this.
Best wishes to you.

Hello Prajakta Akhade, I am attaching a link that will give you all the required information about admission in this polytechnic.
https://www.shiksha.com/college/government-polytechnic-pune-shivaji-nagar-4235/admission
Following link will give you further insight into this crucial question of cutoff.

The typical number of credits required to pass each academic year is 120 credits for an undergraduate degree and 180 credits for a master's degree.

Hi Ankita
Please visit your university for the same.

Hello Soham Jare, yes, your percentage in 10th and being from the OBC category will definitely help you in getting admission to your desired institute.
Best wishes to you.

https://gppune.ac.in/gpp/gpp_s20/upload/Cut off Merit Academic Year 2020-2021.pdf
Check last year cut off of all stream.

Hello Amzad Inamdar, I am attaching a link that will give you all the required information.
https://www.shiksha.com/college/government-polytechnic-pune-shivaji-nagar-4235/questions
Best wishes to you.

Cutoff according to 2020 - 21
Open category tech :-
HD 91.60(G) 90.80(L)
OHD 91.80(G) 92.00 (L)
Non tech :-
HD 92.80(G) 93.33 (L)
oHD 95.60(G) 96.00(L)

Hello Monali Giri, I am attaching a link that will give you all the required information about this Polytechnic. However you can get detailed information about cutoffs in different polytechnics on the website of dte of tech education of Maharashtra. https://www.shiksha.com/college/government-polytec

If you have been admitted already then you can't apply for diploma.