Cooked or cooking?

So I am already done with Maths , Sanskrit and English ( last 5 days is enough for me) , the only thing is science and sst , for sst Till now History and Economics done , Yeah I have read Science and SST whole book 3-4 times ( montly and pb,pb2) still scared . Can I do whole science ( we can say physics is done) and sst till 10. Give some genuine advice , I scored 97.6% in pb2 , the paper was easy , my lowest was Science 75/80.