Just starting out on my preparations, any kind of advice is appreciated.

Just like the title says, I will be starting my last year of ug degree and I figured, it's about time I start my preparations.

My first attempt will probably be 2028, so I have about 2 years for my preparations. I know there are a lot of posts on this sub about how beginners should start, but all the information together has been quite overwhelming and I have more questions than answers.

Do I need to join a coaching centre? Should I cover NCERTs from class 6th. I am an English major student with minors in history and political science, so I have quite a bit of basics covered on history and polity parts. But what about other subjects? I know next to nothing about Economics and I studied geography last time in class 10th.

Where even should is start Current affairs from, that's another vast subject that I have no idea how to start.

So where exactly should I start from? Please help me. Any type of advice is welcome.