It is better to work for 6 months than to enroll in an industrial course for 5-6 months or vice versa.
After completing an industrial-related course or having six months to one year of work experience, you can apply for a B.Tech. Electronics and Telecommunication. Working experience is an advantage. As a diploma student, engineering subjects are easy due to the basic concepts covered in diploma.
A diploma’s weakest point is its inability to teach programming languages and mathematics.
Programming language is a must, especially in C language.
Electronics and Telecommunications is 90% about Hardware+Software-based subjects and work. This is a hard fact to accept. Most E&Tc engineers go into IT companies later. This is true for regular students, who finish 12th grade and then enter engineering. However, this is not the case for diploma students. Diploma students have already worked in industry and can therefore get jobs at well-respected MNCs or electronics-based startups.
You can learn the design and analysis part of B.E/B.Tech by focusing on the areas you are interested in rather than learning theory concepts that other students may have.
I hope you find this helpful.
Good luck! 🙂