HELLO!SHIVA

Since you have only 25 days left,you should revisit the formula and memorize the formula.And solve previous years papers of JEE Mains as much you can.I will suggest some important topic in phy,chem and mathematics,you feel comfortable with these topic then you can revisit the topic before examination.In chemistry go through Physical and Organic chemistry as these two are scoring ,you just need only memorize the formula and name reaction.In inorganic revisit peroidic,chemical bonding,atomic structure and D block elements.In physics go through RBD,electrostat,electrodynamics,AC,NLM,friction,work power and energy.In mathematics..Cordinate differential and integral calculus,Trigonometry,Vector and 3D.These topic are scoring you can revisit the topic and solve previous years papers.

GOOD LUCK!