Dear you need to develop a stamina. Your ability to assimilate any information will increase over the passage of time. What you need to understand is that PA is basically history (a few questions of current affairs as well: like the energy crisis). You won't be able to appreciate it if you don't understand it right from beginning. it's like a jigsaw puzzle. If one piece is missing, the whole picture would not make sense. let me give you an example:

1- 1857: Muslims eventually loose "political and executive power in the subcontinent". For centuries they have ruled the subcontinent and exercised political, executive and economic authority. They have lost their power now. why did 1857 take place? there were various reasons for that.
2-Okay Muslims are not more the executive of the country. it had its own implications. In order to counter that 3 different schools of thought came to the fore. (1) wanted to shun away the western everything and go back to the roots of Islam to regain Executive power and glory [Deoband, etc.] (2) wanted to stick to the western everything and beat the British in their own game [Aligarh]. (3) a mixture of both (Nadva)
3-What were sir syed's main points: Muslims should take education seriously. They should understand that they can not compete the British in an open and merit based system. Therefore the need the education. Till the time they are politically strong enough they should remain aloof from politics because every political party would confront the government at the end of the day. Be loyal to the British so as to gain their protection and spare themselves of the eternal dominancy by the Hindu

And the list goes on. The whole point is to create a flow. unless you are able to achieve that, it will be difficult.

Example number 2:

Why was Muslim League pro-British in 1907 but in 1911 it became anti-establishment? Do you know that the Muslim intelligentsia was divided over the creation of Muslim League (For Example: Sir Agha Khan was against the creation of Muslim League and so were several other prominent Muslims (especially from the UP)? Do you know that the Simla Deputation and the Leaders of Bengal had nothing in common? Why did Jinnah not join Muslim League before 1913 and not before? Khilafat Movement eventually killed Indian Nationalism and why was Jinnah against it? It was on the suggestion of Sir. Sikandar Hayat that the Simon Commission had no Indian member (there were reasons for that).

rather than going for an altogether ratta, develop concepts and then you would not have to remember any dates, any personalities, any reasons. I am available for any help that you or anybody else may need in this regard.