Self Employed Health Insurance worked only 5 months

I am retired but did some Door Dash driving during 5 different months of the year.  So I have 1099-NEC reported income.  The rest of the year I did not do any work (I am retired).  What should I put down as my health insurance deduction?  Just the health and dental insurance costs for 5 months or can I list the whole year?  The IRS publican for form 7206 do not mention anything about this.

Thanks