Hi there,

Hope you are going well.

Yes you can certainly pursue diploma even after completing the btech degree. Some colleges give admission even after completing the higher education while most of the colleges give admission in diploma after 10th or 12th class.

Before pursuing the diploma degree, you need to identify your interest, pursue your interest and then prepare accordingly.

You can take help from various sites to know about the complete details of the diploma degree. You can search the institutions list which give admission in diploma degree and all the educational qualifications and skills needed to pursue this degree.

Hope this resolves your query.