Firstly this needs to be consider that you want to do MBBS because you have a passion for medicine and want to help people? Or is it because you think it is a good career option? If your motivation is strong, then age should not be a barrier. MBBS is a long and expensive course. Make sure that you have the financial resources to support yourself through your studies.
You will need to be willing to put in a lot of hard work. You will also need to be able to manage your time effectively and balance your studies with your social life. Most MBBS students are in their early 20s, so you will be one of the older students in your class. Be prepared for the possibility that you may feel left out or disconnected from your classmates.
If you have considered all of the above factors that you want to do an MBBS, then go for it confidently! Age is just a number, and it is never too late to pursue your dreams.