i am able to solve questions but not during mocks

focus on solving less question like 5,5,5 in each section for 1 or 2 mocks then gradually increase the number of attempt for the mock like 6.6.6.....caz u are not able to solve due to time pressure ..but in start if u tell ur mimd that in 40 minutes i just have to attempt only 5 question..so ur brain will not take pressure and graduaaly with time adopt to the time pressure...give it a try

Start doing small timed sets instead of jumping straight into full mocks and focus on staying calm while solving with a few mocks you’ll get more comfortable with the pressure give sectionals and topic tests