Yeah I usually have Adv. Throw Lightsaber with me at this point.
Cast it on all the suspended Jedi at the start of the battle so his regeneration is neutralized.
As far as combat is concerned, I attack him with fully upgraded lightsaber(s) for short periods of time. Once I get a few good strikes in, I run away using Master Speed so I can use medpacks to replenish health.
So basically my strategy looks like this:
Neutralize Suspended Jedi
Attack with a few strikes
....until he dies!
Ensure that you use TSLRCM for KotOR II!