What actually got your parent moving? Everything I try lands as nagging

My mom’s 65 and doesn’t move much. She’s a nurse, she knows the risks better than I do. Information was never the missing piece, which is probably why every time I bring it up it just lands as nagging.

So I want to try something else: we take turns. I do my run, then it’s her turn…she goes for a walk and tells me when it’s done. No targets, no tracking, just the handoff.

Before I try it: has anyone found something that actually got a parent moving without it turning into nagging? What worked, and what backfired?