I'm not exactly a neophyte to Paris. Been here nine times. However, my wife an I are not aging particularly well (currently in mid-70s). Stairs are becoming a problem for us. I know elevators at Paris metro stations are really hit-and-miss, and we've decided to avoid the metro unless the station has a lift. However, I'm having trouble finding a definitive online guide that will provide a list of all metro stations with elevators. Anyone know of a link to this information?
Try this list of accessible stations:
https://www.ratp.fr/en/accessibility/network-accessibility
You might want to focus on bus routes rather than metro.
That was my thought, too, Laura. Even if a station has an elevator per that guide, there is no guarantee that it works (found this out the hard way at Abbess). But the busses are a great alternative for those with mobility challenges.
Uber or taxi is another option.