Advise on improving my GRE score

so i am getting 8-10 correct in quant 1section and 4-6 correct in verbal 1st section but my performance significantly drops down to 4-8 in q2 and 3-5 in v2 so even with harder section i am not even able to cross 310 mark what should do
-ps i have attempted GRE once and i got 297 same happened in the orignial GRE

Did you test your foundation?

yes i have taken prepswift so given all tick box quiz and foundation quizs the thing is in moderate section i am not able to do sums quickly i am taking more time so i am able to do less sums

How good are your scores?