Management courses at IIM Indore are taught throughout semesters. In each semester you will have subjects taught via case studies or group presentations or role-plays. It can be difficult if you are not good at communication.
But there are elements that provide fun as well that will help you try to improve your personality, and your communication skills get better, that's when your confidence will improve. To be honest, there's no other degree that can make such a huge impact on your life more than an MBA degree.
Be mindful of the curriculum because it may seem intimidating but is not as tough as it seems, what makes it difficult is the deadlines for assignments, but once you cross this hurdle you'll be in a world full of opportunities and growth.