BBA

Yes there is a lot of exposure given by Amity to its students from any discipline but it is applicable only to the toppers of a particular department so if you score well you can go there., so you can go there without any doubt.

No, it is not tough. You just have to have business acumen.

Yes, you can pursue BBA.

Generally, no college in Mumbai will allow you to take admission in 2nd year. Hence, you have to retain the MIT-Pune or take the fresh admission in Mumbai.

Hi,
Both are good colleges, as such but I would prefer to Gitam University as such, choose any one you won't regret.
All the best.

You get every bit of information about BBA in BIMT, Gurgaon here
https://www.shiksha.com/bba/course/bachelor-of-business-administration-bba-bimt-Gurgaon-133560

No,
Two Bachelor's degree courses cannot be done together.
If you do so, your degree can be cancelled.

BBA in Business Analytics Syllabus:
Here are some of the important subjects present in the curriculum:
Organizational behavior
Principles of Management
Business Communication
Marketing Management
HR management
Finance management
Business Modelling
Data Environment
Operations management
Data management
Business analytics
Business intelligence
Data visualization
Programming for analytics
Predictive analytics
Big data analytics
Business laws
Data mining

Yes, you should go for MBA, as it would help you to develop your marketing and communication skills All the best.