Al Ciao, I assume you are playing a sorcerer as well from the description of heals, a couple of tricks I have learned healing wise when your force reaches zero
1. Hit them with your lightsaber, you won't do a whole lot of damage but your force builds back quicker.
2. if you are lvl 50 and have revivication which is the main aoe heal you will use, when you use it stay inside it and hit consumption a few times and then unnatural preservation.
Has saved my life and my teams life quite a few times.
I assume this would work for a Sage on the republic side as well