Hey sumant.

Being a student of BIT SINDRI one of the reputed college under JCECE I can assist u in some ways.

See the JCECE level is just a bit low than the level of the JEE MAINS. So using only RS AGARWAL for ur study might not be doing justice for exam. U should be focussing on the same  competitive books as u are using for any other engineering entrance exam.

Hope this helped u. Ask if any query.

Good luck

No, there are only basic things given. You need to practice the previous year papers and you should also solve the ncert exemplar problems. Try to revise quadratic equations, parabola, vector, 3D, Limit, Ellipse, Complex Number, Trigonometry on a daily basis.