I am dropper of NEET and I feel I am unable to attempt questions. Specially physics. Also at times in chemistry. What to do?

Try to clear your concepts first you can take help of NCERT books. After completing any topic try to solve as many as MCQs related to that topic for your practice and past year problems as well to understand the level of questions. Once or twice a week you can also solve complete mock test to analyze your performance and to know your strengths and weakness.