Dear

Its very important time for students,From now you should start working hard.

I will suggest you to start from the begning. first revise your old notes in the same order as you was tought in coaching.

also refer good books of that topic. then solve standard question from books and IIT study material

and after finish the topic solve question of that topic from previous IIT JEE papers.
I will suggest you to join any test series.wher you can compair with others.and also you will know the possible changing pattern of IIT JEE ,as well as you will learn how to use your 3 hours in attempting the different portion of the paper.

once you start scoring good score your confidence level will increse.
you can join online test series it will save your time.

Here i am maintioning few chapter .prepear well these chapter because more question were asked from these chapter.

Maths:   

calculus, Vectors, Complex numbers, co-ordinate geometry(2D+3D) Quadratic equations.

Physics: 

Optics, Modern physics, Thermodynamics, A/C circuits, Fluid mechanics, Experiments.

Chemistry:

                 Solid state, chemica bonding, Aldehydes, ketones, carboxylic acids, Alkenes,

                alkynes, stereo and geometrical isomerism, transition elements, coordiantion compounds,

               electro chemistry, kinetics and equilibrium.

Prepear all topic and give more stress to above topics.
Just stay calm and focus on understanding rather than mugging. Be regular in class and stay with concepts.

Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here

and we will get you the answer and detailed solution very quickly.
 We are all IITians and here to help you in your IIT JEE preparation.

 All the best.

Regards,
Askiitians Experts
Badiuddin