Deductions & credits

So I've used TurboTax for 20+ years and the last several years I used over-ride of box 29, and I paper file. It worked!  This year (2018) I cannot figure out how to deduct my health insurance premiums as the son of a 5% owner.  Please help.  Is there some box that I can over-ride?  I really don't want to hire a CPA.