> Getting into jazz early can be tough, like how will you understand an extremely basic 3-6-9 voicing and how it connects to a 7-3-5 voicing in a circle of fifths progression if you haven't studied your basic triads, basic 7th chords and the circle of fifths?

Do you really need to? Why can't you just play something that 'sounds jazzy' but is simple enough without understanding any theory behind how it was written? Just for early interest/motivation/joy of having made that sound oneself.