Hello! It's fantastic that you've recognized your passion in computer science and wish to pursue it instead of physics. Even if you're nearing the end of your BSc in physics, there are still options for moving into the field of computer science. Here are some things to think about:

• Postgraduate : After completing your BSc in physics, you can pursue a master's degree in computer science (MSc or MCA). Many universities offer postgraduate computer science programmes that welcome students from a variety of backgrounds. While certain programmes may have prerequisites, you can look into possibilities that match your interests and future goals.
• Self-Study and Online Courses : In addition to formal schooling, you can begin learning computer science concepts through online courses, tutorials, and tools. Lots of organizations provide a diverse choice of computer science courses at various levels. This will assist you in laying a solid basis even before you formally enrol in a new programme.
• Skills developmen t: When applying for computer science programs or job opportunities, emphasize the abilities you learned while studying physics. Transferable and valuable skills in computer science include problem-solving, analytical thinking, and mathematics.
• Internships and networking: Connect with computer science professionals through networking events, workshops, and online groups. Internships or part-time jobs in computer-related fields can give you with hands-on experience and industry insights.

You also can go through the link below to know more about computer science courses,

https://www.careers360.com/courses/computer-science-course