Civil Servant (IAS/PCS)

Managing both will be hard. Since you are pursuing Honors, you will require proper time management. You can start by studying newspaper daily and Studying General Science. Read the Newspaper thoroughly in morning and Study GS in evening. When you get holidays, pickup a topic from history or civics and finish it on the same day.

If fluency in Kannada is a requirement then the inability to write in the Kannada language may be considered as an ineligibility.

It is not fake. It is affiliated to CCSU.
http://www.ipseducationmeerut.com/affiliation.html
Check here to confirm. Click on the 2nd PDF.
http://www.ccsuniversity.ac.in/web/Colleges.htm#Prof

Prepare by making your GS and Current Affairs Strong. And solve some UPSC sample papers to get a feeling of paper. The entrance that JMI takes is a relatively easy version of the main exam. So it will be hard but not impossible.

Yes, you can certainly appear for UPSC Civil Services Exams after completing B.Com. You will have to work hard to become IAS officer. If you are serious then join a coaching institute.

B.A. In history would help in your dream of becoming an IAS Officer. The idea here is to choose a Stream that helps you to prepare for IAS too. B.A. In History should help as IAS exam usually asks a lot of history questions. You can also pursue BA+LLB for same reason. You could pursue B.Sc. If you want but that won't help as much.

By start studying today. Dedicate 7-8 hours of a day on studies. Join a coaching. Practice sample papers and keep giving same level exams to test yourself. Keep in mind there is no other option than working hard for the civil services.

Yes, surely you are eligible now. There is not much in the eligibility criteria for civil services exams.

It depends on where you are at now. For an average student completely dedicated towards it, it will take nearly 2 years with the help of coaching.

Yes, indeed. Get all the materials and join a good coaching centre. You may find it a little hard to manage along with studies, but it is really worth.