Retirement tax questions

Yes, on the  7206 form (there is only one),  the correct amount is listed.  The change happens when the data is transferred to  Schedule 1 (1040), and the change is  also reflected on the QBI worksheet.

In case it matters, the primary taxpayer has one Schedule C  business, which has no health insurance premium payments.  The spouse has two schedule C businesses. Only one of those two paid health insurance premiums.