Need tips to defeat Darth Revan and Malak with jedi revan

So I still have lots of trouble with this "metaverse" Thrawn strategy...

Is one of the tricks that you always use assist attacks calling GMY to hit SithT (or other high health target) for the 40% TM on GMY? I find I simply can't whittle DR down in health fast enough to get him into the 60% window for GMY to finish hm off with Unstoppable Force.

My GMY has +1007 physical and +1720 special offense, so he should be able to do decent damage.

Thanks @EventineElessedil for the detailed description of the strategy though!