Where to enter Self Employed Health Insurance
https://ttlc.intuit.com/community/entering-importing/help/where-do-i-enter-my-health-insurance-premi...
Self-employed health insurance deduction goes on Schedule 1 line 17, which goes to 1040 line 10, as long as the expense is not greater than your net self-employment income. If it does exceed your net self-employment income it gets split automatically. An amount equal to your net self-employment income goes on Schedule 1 line 17, and the remainder gets added in to medical expenses on Schedule A.
BUT do not enter any Health Care Marketplace insurance you bought. If you enter the 1095-A and select the "Self-employed and bought a Marketplace plan" box, it will automatically include those premiums in the SE Health Insurance section. So you shouldn't enter it again on schedule C.
