hello 

krishan pandey 

Actually in january session you got to less percentile but don't worry about the april session i will guide you please let me tell i hope you covered the NCERT concepts and please refer the some of the reference books for physics H C verma and for maths R D sharma , for chemistry O P Tandon please donot waste your valuable time at this peak time of 20 days please refer the sampe papers and previous year question papers for better understanding if you want any topics are difficulty then please watch the NPTEL videos 

i hope you understood 

All the best