Eligibility for B.Ed. teacher training course after a break

For pursuing the B.Ed. course you should have at least 50% marks in your graduation degree. If you qualify this eligibility, you can go for B.Ed. Age is not a factor here as people even up to the age of 35 years opt for such courses.. You can opt B.Ed. through correspondence course which is generally completed in 2 years time. Generally for correspondence mode some teaching experience is warranted which you have already acquired during your assistant professorship.

One thing which I will like to mention at this juncture is that you can also think of going for post graduation in your core area and then go for the NET (National Eligibility Test) after qualifying which you can apply for lectureship in universities or colleges.

Have you ever thought of appearing in competitive examinations in state/ central Govt services or banking services or railway services or subordinate services in Ministries etc. It requires some preparation and hard work but is worth trying as after this one has a good and prospective career.

There are many opportunities in biosciences and bio industries and with your core competency you can think in those terms also.

You can do B.Ed after a gap. There is no issue. You can do B.Ed by correspondence course. If you secured 50% marks in your graduation you can apply for B.Ed. Are you a Post Graduate or Graduate. This is not clear in your question. Anyhow, you can do B.Ed course which is a two-year course.

As an Engineer in biomedical engineering, you have many options for jobs.
Manufacturing Engineer: They will develop and design medical products. These products may include medical instruments, imaging devices, etc.
Quality Engineer: Quality engineers test medical products after they are manufactured and confirm that they meet the prescribed specifications.
Software Engineer: They do the design and development of computer programs which are useful for various medical applications.
Researcher: Many researchers also teach at the university level. They will work in the research organisation and do the research related to the field.
You can try any of these jobs also.
If you are PG, you can think of appearing for NET examinations and once you are qualified in that you will become eligible for lecturership or you can also try for PhD.
In addition to all the above, you can appear for bank examinations, State government jobs and central government jobs. For all these posts you are eligible and you can apply for these posts when there are advertisements for these posts.

Of course, you can persue the B.Ed course and even from the correspondance mode but only thing that you have to ensure its recognition status through UGC. There are a number of institutions in the correspondance mode providing you quality of education and at the end of the session there are doubt removal,classes taken up by the experienced faculties and you may avail such sessions if interested to strengthen your basics. The fore fronts in such institutions are IGNOU, Manipal University of Distance education, Annamalai Umiversity, Karnataka open University etc.
This course can be initiated even after a prolonged gap.
The other options which can elevate your career would be to join a constituent college with the clearance of NET test but ensure that you have secured minimum 55 percent marks being a general candidate. A relaxation of 5 percent and 10 percent are offered to OBC and ST candidates respectively. Once you clear the NET test, you will get assignment in a government college and later, you may acquire PH.D for widening your career.