I wd say dont be into starting a business while studying, earn your degree as it matters, meanwhile think over what you really want to do, get clarity on your passion, businesses fail mostly due to lack of passion n strength to take it forward due to absence of skillset, team up with a friend to start a side hustle rather, most of millennials are online, see what you can easily sell, some are great chefs, some are good at reselling, try what fits your time as well, hope it helped!