I have been scoring low in quants. I have done almost all the syllabus and can attempt nearly the entire paper without time restriction but with time restriction my accuracy is at 50% even with low 10-12 attempts. Any suggestions on how to improve accuracy and overall marks ??

Practice a lot

identify the easy-medium question and then solve. dont start solving as soon as you read, the question might be from a topic you are comfortable with but might consume a lot of time. In mocks we have atleast 10 questions which can be solved easily or with little time investment, try to identify them and solve with 100% accuracy.