Greetings Shimna!

Hope you're doing great.

I'd have really appreciated if you had mentioned the kind of certificate you wanted to get attested. Let's assume you're looking forward to getting your category certificate attested then it's totally okay to get it attested form Regional Gazette officer. If you go through the notification details of the college you're getting into you'll find the details regarding category certificate format and how it should be attested. I'm sure you'll find the attested copy procedure. Although, if you still facing an issue, do reach out to concern authority of the college and they will help you out with the process.

Hope, this will help. Do reach out in the comment section below for any query. 

Have a wonderful day ahead. :)

Cheers!