Best interconnect burn-in method

yes

Fortunately, there is no logical reason for burn-in with cables. So your approach will be equally effective as any other. If you experience audible differences over time (drift in performance) then it would be best to have your active gear (amp, preamp, power source, grounding etc.) checked and repaired/replaced. Generally a change over time means something is wrong (temperature issues, incompatibility between components, leaks to ground, capacitors beginning to fail etc)

@shadorne ,
I’m not here to debate the concept of cable burn-in, god knows it’s been done before. But what the manufacturers do state is that newly installed cables need a settling in period. For example, cables that have been coiled and packed in a box for some time, need to be installed, let the dielectric reach room temp, and run a signal through them.

@shadorne Your statement flies in the face of Audioquest's Dielectric Bias System and an understanding that once installed in a system, cable dielectrics "form" after a period of time with signal flowing through them.  AQ's DBS system sends 72 volts through the cable to keep the dielectric formed at all times after initial break-in.  As the dielectric forms the cables tend to "open up" in terms of sound quality.  It is actually a cool thing to experience if you have never had the occasion to do so.  Lots of unexpected pleasures in this hobby.  That's one of them.

@shadorne is correct

do you guys even know what a dielectric is?