Schedule C for Sole Proprietorship

Hello, I have a Schedule C question. I am a sole proprietor and have recently started a 2nd business which is similar to my existing business and they share the same EIN. How do I list my new business expenses and income? Start a second Schedule C (if that is possible with Turbo Tax) or list them together with the existing business and try to separate them by use of a business name abbreviation? Thank you in advance! Marcus.