Help needed for IOQM 2026(In 11th). How to maximize my score from scratch without getting overwhelmed?

I am in 11th, mainly i am preparing for JEE but like 2 months ago, Allen selected few students who were getting decent marks in tests and started conducting ioqm lectures for them, including me.

We have only covered number theory from divisibility, Diophantine equations congruence modulo, chinese remainder theorem, solution of triangles and permutation and combination, I have not solved any IOQM material aside form the questions given by sir during the lectures.

Actually I am not really expecting to qualify for RMO as this is the first time in my life that I am really preparing for any Olympiad, and I don't think I can clear the cutoff in 2 months.
SO I just wanted to ask what should I follow, to strengthen my problem solving capacity(which was my reason to get into IOQM) how I can give my best in these 2 months, which chapters/topics I should focus on? And what resources to follow, that are not very lengthy and progressive in difficulty, so I can actually understand the Olympiad level thinking even if it is only in 2 -3 chapters. So that I can score a bit in the actual exam and not score 0.

I would appreciate if someone helped me as I really confused, there are so many resources, so many channels, so many books, and whenever I try to open a book pdf, I get overwhelmed by the sheer amount of information that I cant really understand on my own by just reading, and of course I am not able to solve any question, because im just jumping from theory to Olympiad level questions.