As someone who loves reading novels, I can't access real-time online knowledge. However, I can give some general suggestions and hints. It was normal for grades to fluctuate when learning any new subject. It may take some time to adapt to new learning methods and master new knowledge and skills, which may lead to some decline in grades. The important thing was to be patient and persistent. Don't lose confidence and don't be discouraged. Try to find the problem and find a solution. You can seek help from teachers or classmates or find some study materials and resources to strengthen your studies. In addition, you can try to combine science and liberal arts to better understand and apply new knowledge. He tried to link different knowledge points and concepts together to build a more complete knowledge system. Finally, he had to maintain a positive attitude and constantly work hard to believe that he could make progress and succeed. I wish you all the best in your studies!