How do I prepare for my final proff exams ?

So I am in batch 2022, and I haven't yet started preparing for the exams that would I have to appear for in the following year.

Neither do I have any coaching subscription.

I suppose I did fairy average in the internals but now , i wish to score well and get a nice pg seat.

Can anyone advise me on how do I manage it all ?

Especially when I am quite tired for most of the time following classes?