Why not just change to a lower gear? You haven't answered
@figbat 's politely phrased question at all. OK, maybe not 'complete' b****ks.
Merry Christmas, and I suggest you don't take 'chat' so seriously. By all means report me to the mods and I will edit my asterisks.
I applaud your inclusion of young child in your cycling expeditions.
But like
@figbat I'm interested. Moving to 584 from 622 with similar tyres (37 say) implies a gear length reduction of 6%, similar to going from a 16t sprocket to a 17t sprocket. Changing wheels seems an odd way to address a perceived inability to select a gear which suits your 'more comfortable' 90-100rpm cadence, as opposed to your average cadence.