7 then lard arse.
Yeah pretty much.
I think you're going to need to introduce a form of regime to your riding, that's what worked for me.
Have a non-commuting set distance.
Ride it at least once a week.
Ride it either too your max, or at/above whatever your average cadence is.
Over a period of time I think that will help become nearer to your new 'normal', just putting the comfortable miles in really isn't going to move the dial.
Either that or train to a big event that's outside your comfort zone.
Signing up for next years 'Sportive over the World Championship course', ought to focus your mind which in turn will make an average ride now seem easy and worth attacking.
Thanks! Would love to do that, but we're having a second baby in November and I'm worried that even standing up will be a challenge by then!