CBSE 12th

Yes, you can do B.Com +CS after your class 12th commerce, and it is a good choice, because CS has a very hood scope now, and it is likely to grow through years passing, and there will be good amount of jobs available for you later.

You can clearly pursue CS, and it doesn't matter whether you are a good student or am average one all you need it to have keen interest in programming and it has a good scope too.

The college offers Diploma in Optometry as a distance/correspondence course for a duration of 1 year.
For more details, click below.
https://www.shiksha.com/medicine-health-sciences/paramedical/course/diploma-in-optometry-imperial-institute-of-management-andheri-west-mumbai-288678

Yes, you can definitely apply for and pursue CS and B.Com even if you haven't studied maths in your class 12th. Maths is not a compulsion for CS and B.Com.

Hi Aparna,
Yes off course, you are eligible for this entrance exam, as you have cleared the +2 level examination in the 10+2 pattern of examination of any recognized Central/State Board of Secondary Examination.
23 years is an upper age limit. Feel for any of your further doubts.
Good luck.

From which trade have you completed your class 12th? As per that, further course can be suggested to you.

As you have 2 years of work experience, you can go for Diploma course in Automobile field. Diploma course will enhance your skill set. Diploma course will make you eligible for more job opportunities. You can also look for some short term courses specific to your field.

Have good knowledge of any field of your interest. Even if you love to play any sport, became a master in that or any other field like Science, Medicine, Finance or Arts. You can even a become a good Hotel Manager and get into top hotels like ITC, J. W. Marriott or Taj. Just work hard in your interested domain, get as much knowledge as you can. Continuous learning is the only way to reach at top.

Yes, you have good chances to get into IIMS. So, kindly wait for the result and hope for the best. Good luck.