Siri, for a percentile of 96-97, you need to score  more than 250. With the way your preparation has been going on, we do not think that it is going to be difficult for you. Keep practising as many as mock tests as you can do apart from Narayana's material. Focus more on important topics.

In Physics, Modern Physics take the top slot with 5 questions. Heat and Thermodynamics, Optics, Current Electricity, Elcetrostatics get 3 questions each. Magentics has 2 questions and the rest get 1 question each.

In Chemistry, Transition Elements and Coordination Chemistry, Periodic Table and Representative elements take 3 questions slot. Thermodynamics and Gaseous state, Atomic structiire, Chemical Bomding, Chemical and Iconic Equilibrium, Solid State and Surface Chemistry and Nuckear Chemistry and Environment get 2 questions slot eacch and the remaining get 1 question each.

In Mathematics, Co-ordinate Geometry gets 5 questions. Limits, Continuity and Differentiability, Integral Calculus get 3 questions slot each. The rest get 2 and 1 questions slot. For complete breakdown, please read our article: https://engineering.careers360.com/articles/jee-main-syllabus-weightage . It doesnt matter since when you have started preparing. What is important is the quality of the study. You can always check the Knockout package we offer: https://learn.careers360.com/knockout-jee-main-april/