Im lvling doing pvp/class quest and choose follow LS, but...damm, its a pain get LS points with the Sorcerer, im lv 38 atm and only have 2150 points. I get my first Relic at lv 37.
But you do have a matrix cube in one of your relic slots?
Anyway there are some ways to "produce" light side points if needed. The diplomacy crew skill gives either light- or dark-side points on every single mission and many flashpoints (which can be repeated daily) come with dark- or light-side choices.