Practice a lot of tests ! In a time bound manner ! Don’t loose Hope ever as it is the single thing that would help you in those three hours !
Don’t skip over the MAT and English part of the paper prepare for that too ! It will help to maximise the score
Do try to attempt the extra questions as they are generally on the easier side and compensate for the wrong answers on the previous part of the paper
Don’t feel you are less than anyone ! Work hard each and every day !