Ruspix plate, isn't it the timer starts when you have a shiny plate available, ie 20 hours after your last sortie run.
On rp, the tldr is do 3x v25 t1, eg butterfly, 5%dmg each time, then one run of the nm you want at highest V you can do 5% dmg on.
After 3x consecutive runs without exiting the next run will be charged with 3x v25 RP plus the RP for the run you do. Use an amp on all runs.
The RP for t1 can be converted to segs for a small profit. Can also do one run of the Nm you want and 2x v25, then another NM for charged run and potentially keep going to keep charged run chain.