Yes, there are several tips that can help you improve your speed in solving previous years' papers for Commerce:

1. Familiarize yourself with the format: Understand the structure and format of the exam paper, such as the number of questions, time allocation for each section, and marking scheme. This will help you plan your time effectively during the exam.

2. Practice time management: Set a time limit for each section or question while practicing previous years' papers. Challenge yourself to complete the paper within the given time frame to improve your speed. Gradually reduce the time limit as you become more comfortable with the format.

3. Focus on key topics: Identify the important topics that are frequently asked in previous years' papers. Allocate more time for studying and practicing questions related to these topics, as they are more likely to appear in the exam.

4. Solve papers under exam conditions: When practicing previous years' papers, simulate exam-like conditions. Sit in a quiet environment, set a timer, and solve the paper without any distractions. This will help you get accustomed to the pressure and time constraints of the actual exam.

5. Analyze your performance: After solving a previous years' paper, review your answers and analyze your performance. Identify the questions or topics where you took more time or made mistakes. This will help you understand your weaknesses and focus on improving them.

6. Improve problem-solving skills: Enhance your problem-solving skills by practicing more numerical and analytical questions. Look for shortcuts or alternative methods to solve complex problems, as this can save you valuable time during the exam.

7. Practice with a stopwatch: Time yourself while solving individual questions or sections of previous years' papers. This will help you track your progress and improve your speed over time.

8. Take mock tests: Take mock tests that simulate the actual exam environment. This will help you get acquainted with the pressure and time constraints, and also provide an opportunity to practice solving questions from different years and topics.

Remember, improving speed requires consistent practice and dedication. Start early, create a study schedule, and gradually increase the difficulty level of the questions you are practicing.