help regarding physics

hi, so as above i rlly need help/tips in physics cuz that is where i keep scoring less.
for example, in my first shift i got 94% in phy but 99.7%math and 98.5% in chem, so bc of phy my whole percentile went down.

recent mocks too, i am getting 65-75 in math and similar in chem but my phy is relatively lower

its not that idk what the sum is, i attempt most questions by actually solving them but i get way too many negatives bc sometimes number goes in den/i get in num etc etc

so what do i do? my exam is on the 8th