I can understand why the Adjudicator can’t or won’t order a specific remedy because it is possible that the remedy they offer won’t work.
However, the order to to do what is required to stop the the transmission of noise means the effect is what is ordered, not the means by which it’s done.
Have a look at this recent case at the CTTT where the hard floor owner had thought they’d get away with just putting down a couple of rugs … they ended up with $1000 fine for ignoring the CTTT order.
My advice would be to talk to the strata lawyer first, then do the acoustic testing if they think that’s appropriate, then take it from there.