After you enter Form 1095-A, it will ask if you wish to link with a business, so you will want to begin your Schedule C before you enter your Form 1095-A, so there is something to link with. Is this the way you linked your Marketplace health insurance with your self-employment income?
If you have additional insurance, enter that in the Schedule C portion, in Expenses. You may enter health insurance, dental insurance, and vision insurance, just do not duplicate premiums listed on Form 1095-A.