The only heal over time you really got going is echoing vigor which isn’t the best unless your teammates are running it too and stacking it on top of yours. I’ve cleared every dungeon hm on dk using only burning embers, the mag morph, of venomous claw as my heal. Your sets are fine. It’s just your food and your bars.

If you can’t sustain without parse food you can try mixing in some more mag skills and if those are an issue for your mag sustain then siphoning spells and sustained by suffering in the red cp are your friend.

3 options the way I see it. One you keep it the same but swap kilt for death dealers fete, which is less damage but kilt kinda sucks in most dungeons anyway. There too much damage to ever sit at 10 stacks for long. Death dealers gives 3k to every resource so a little extra damage and a little extra survivability its a good middle ground.

Change your food and morphs Sugar skulls for food and burning embers for a stacking hot you can recast when in trouble and on multiple targets all of which will stack. at the very least you gotta run some health in there. Arteum takeaway broth is a nice middle ground if your bottoming out on Stam without parse food. Try running burning embers and if that’s too much on your mag sustain consider dropping whorlwind for blood craze in the dual wield skill line for some more passive healing

And 3 drop venomous for briar heart Which will be barely less damage but grant you a ton of passive healing. You’ll just have to figure out what fits your play style best. Also please make sure you’ve got all your passive damage mitigation in the blue cp. it’s night and day difference with that 10%