Chem help

I am doing good in maths(75+) and in physics (50+) but will improve it by doing jee mains pyqs and syllabus coverage + formulae revision

but i dont know what to do in chemistry, now a days i am getting 30s so please someone tell me what should i do to reach till 50-60. i did chem till 25 jan, but then left, now i forgot most things,

what questions should i do ? i have all materials please suggest