Blaster Stance and Dual Saber, full spec

Focus one with blaster parries on normal bites and get 1-3 hits in.

Make sure every time the lounge/tounge/vomit/leap you dash toward them and get 1-3 hits in.

Once the first on get to phase 3, and you can spam throwing 1 of your dual sabers (if you've been primarily use blaster stance as you should, you'll have full force meter still. Having the perk that gives you force on heal is super helpful. Only throw one of 2 sabers because to keeps you locked in place. Any blaster/throwing perks help too) until the first one dies.

From there the 1v1 is pretty easy comparatively. Punish all of the same moves the same way throughout the 3 phases. You shouldn't have to result to saber spam on phase three again because their isn't 2 of them, but hey, do whatever works.

This strats takes some skill and some cheese but it work for me and I wish I tried it sooner. Finally clicked when I realized I wasn't using the force. Figured I might as well throw sabers when the first one gets super agressive in phase 3. It's a nice force dump and it's great damage. Hardest part of this is probably the parries.

Edit

Also worth mentioning most red attack should be dodged with a double jump (and dash when you want to rush them). Way too hard to dodge on the ground, if possible at all. The chomp was pretty easy to parry and dodge though so do with that what you will.