same used to happen with me. i will give jee 2017. doing ncert properly was the key for me and then i sove p bahadur and arihant for chem. for inorganic i use a technique that every day before going to school in the morning i once reaad through s block p block any one chapter. do it for 1 month and u will see the result. for tly refer to solnsphysics do dc pandey probably u will do better. dont see solutions until u have done max efforts. because i used to do like this in class11. our fiitjee physics sir said a very imp thing that if u constantly refer to solutiions our braiin become habituated with that kind of a approach and when exam time comes , it cant cope with the pressure and stops working. this used to happen with me in case of physics so i shared.
						

							
@ SOUVIK 
nothing to worry about , i think u are good at numericals stuff but u hates some rotting concepts . 
no problem , u have 3 mnths of time in your hand . 
in these three months what u have to do is 
1- just take chemistry imp topics like GOC , p block , thermodynamics , equilibrium , chemical bonding . and do the concepts , frst of all read it from ncert , 
2- then take last 6 years jee paper and practice it , 
and dnt loose the hope – in coaching center test they make the level difficult , than the actual level of jee . 
for physics u need to understand the concept , only then u can do the ques , and h c verma are preferred for that 
ALL THE BEST