A question: Is it possible to decline to level up early in the game so that the levels are "saved up" for the time after your character becomes a Jedi?

Whereas we typically achieve around Level 8 in our "native" profession (Scout, Scoundrel, Soldier) before we gain our first level in the Jedi classes (Jedi Guardian, Jedi Sentinel, Jedi Consular), would it be possible to forgo some of the native-class levels in favor of gaining a greater number of Jedi levels?