I'm planning on walking 22 days and resting 4 days.
Welcome Marcia.
Being a perverse critter I did my rest days before I started. Two nights (one full day) in both Lyon (great museum and wonderful buildings) and Le Puy (lots to see and checking out the start of the route) as I was unlikely to get to either again.
Once started there are around 750 km to S Jean. You don't mention your end point. So 22 days walking means an average of aroung 35 km each and every day.
With the exception of Cahors, most places are villages or small towns.
I planned to stop at Moissac for two nights after 14 days continuous. And did. The meals of Anne Vittot at Gite La Petite Lumiere (right on top of the hill, along side the statue of Mary, 4 Sentier du Calvaire) were wonderful whether there were 12 (on my first night) or two (on my second night). There was enough to keep me occupied on my rest day, including a walk (sans pack) down to the massive canal bridge and to see the tourist canal barges tied up in the pool.
And the day before, by serendipity, I stopped at Lauzerte. Like Conques, this is an ancient town but on top of a hill rising out of the surrounding country. They have not been precious and have built new on the old street plan. It was magic to walk around the town in the hour befor sunset and for an hour starting just before sunrise to see the buildings and the vistas. The communal meal in the village gite was a good occasion for me as a boring mono linguist.
La Romieu is worth a two hour stop to visit the collegiate church, to learn why cat statuary abounds, the history of one man who started and ended his days here after being locum during a papal vacancy of around two years, and of the political connection, for a long time, to the throne of England.
I had a forced two night stop at Eauze and recommend, the "cathedral", the Museum (and its Treasury) and the wonderful meals (and chat about Armangnc) over nearly three hours provided by Mme Marie-France of Gite La Grange (4 avenue de La Tenareze).
Communal meals at Aumont-Aubrac, Nasbinals, Arzaq, Arthez de Bearn and S Jean itself also stand out.
But the best part for me, an extreme introvert, was the people, the people, the people.
My blog (see below) may also be helpful.
I wish you well.
Kia kaha (take care, be strong, get going)