Diploma

You have not written about the colleges where you wish to pursue the B.Sc. Aviation course. However, the basic eligibility criteria for B.Sc. Aviation of Pune Institute of Aviation is given below for an idea. Eligibility criteria:
1. 10+2 with PCM or
2. Passed Three Year Diploma Course approved by the DTE, Maharashtra State or Equivalent authority. Diploma (10 + 3) awarded by MSBTE or equivalent by any other Government body in following branches of engineering. I) Mechanical ii) Electronics iii) Electrical iv) Computer v) Information Technology vi) Automobile vii) Industrial Electronics viii) Radio Engineering and Telecommunication.
So from above, technically you are eligible for this course but not included in the eligibility criteria as mentioned above. So, it's better to ask the college directly regarding this.

There are many good universities that provide M.Des in fashion, Interior, and Product design, and more. To name a few:
1. IILM University Gurugram
2. Pearl Academy
3. NID
4. NIFT
5. Arch College of Design & Business. You can refer to the link for good institutes and colleges for Fashion Designing Course. https://www.shiksha.com/design/fashion-design/ranking/top-fashion-design-colleges-in-india/94-2-0-0-0. Or
You can also have a look at IILM University, Gurugram. They offer M.Des degree programs with various specializations like Fashion, Interior, Interaction, and Product Design of 2 years with an added advantage of Liberal Education in their curriculum with good and advanced pedagogy in teaching. The School of Design & Fashion at IILM University, Gurugram offers a choice of career by combining a major and minor degree within design fields or other mainstream courses like a combination of major in Fashion and minor in Graphic Design or major in Interaction and minor in Business. You can visit their website to apply for the programme or to enquire more. Good Luck!
Also, you can appear for the online that exam on 2nd May 2020.

Hi, it is always preferred to go for a degree course dear. A Diploma and certificate course is usually a short term thing which will help you for a certain period of time in your career but it's benefit won't last for very long. You cannot grow more in your field with these courses. I am not denying that your experience, efforts and skills do matter in how much successful you will be in your life but you cannot purely leave it to that. Courses do help you to get proper education, push in your career and self development. Diplomas and certificate courses are designed for immediate benefits which give you a minor stunt in your career when you SEE no growth in your job or just to shift from one area of work to the other. Diplomas give you basic knowledge and ideas of your subject but a full time degree course is very deeply designed to give an overall development of your skills and mindset. Degrees stay with you all along your career life and they are valued even more when they grow old being part of an organisation. Degrees will be acknowledged by all your future employers and you will hold more value and preference over others. So definitely I would suggest you to go for a Masters degree course. Shifting to any other field of design doesn't put your value down. You can consider M.Des interior design for Masters. You can consider IILM University Gurugram for this option. They also offer liberal education which allows you to pursue your passions so even if you want to change your field, you may still be able to study some subjects of other fields which is the best part of Liberal Education. You get to choose your subjects.

Hi,Lateral entry students do have an edge as they save one precious year and enter the dynamic field in the second year of BTech.
You would need a good college which would give the best academics like best faculty added with a good infrastructure. It should have all the equipment needed for the field practicals and exposure to big companies that would recruit the students.
The best thing would be to browse some good colleges like Indian Institute of Roorke Jamia Melia Lovely Professional University which is known for its placements records especially.
So browse carefully the sites, check your score, and start the admission process which is already being carried out by many colleges totally in the online mode.
Thanks.