Physics help

Guys I'm weak in physics. Abhi mera score 40-50s mein hai. I haven't completed whole syllabus. I just need around 70-90 in phy. (Bio,chem are okayish)+low cutoff state se hu.

I completed modern phy, Semiconductors, kinematics and aadha mechanics. Should I do 12th ka portion from Allen's marathon or else do

KTG, thermodynamics, ray optics and other high weightage ke oneshots separately?