regarding board prep

another cliché last minute study post but yes im really in a do or die situation now as boards start in 9 days and I haven't done phy and chem properly (pcb + pe) I'm confident in bio, eng and pe also i can do it in 2 days but i did not do phy and chem the whole year. I only did electrostatics, semiconductors and little bit of ray optics from physics and solutions, electrochemistry, biomolecules, coordination compounds, d block (not f block) from chemistry. My OC is yet to be done. I want to score atleast 90% but is that still possible with less phy and chem prep? what chapters should i focus rn