I find daily RC very difficult how do I proceed with that further?

I feel the solution is right, more and more reading. Its just that i feel its a kind of marathon and results wont be shown up immediatly

+1; same here...
went thru online... all i found is "read-read" which improves vocab and speed of understanding.
especially aeon essays which are 1000 words para- so by habitual reading makes CAT para (500 words) look smaller

Have you checked the video I made today? That may help - https://www.youtube.com/watch?v=QYtnUbSduik