How do I control initial tab focus within a radio button group?

I created an interactive PDF in InDesign. The overall tab order is correct and flows properly between fields.

However, when tabbing into a radio button group when the pdf is opened in Acrobat, focus lands on the first radio button that was created instead of the first option in the group. This makes the form feel sloppy and inconsistent.

I have already tried reordering the fields in Acrobat under Edit → Prepare Form → Fields, but that did not change the behavior.

It appears Acrobat is prioritizing widget creation order inside the radio group rather than the document tab order.

Is there a way to control which radio button in a group receives focus first when tabbing into the group?

Thank you for your help! I’m banging my head against a wall here...