The ONLY way to do this is to save as idml from CC2014, open that in CS4, Export from CS4 to .inx for CS3, open that in CS3 and export again to .inx for CS2. Even if someone is willing to do that for you, the odd that file will resemble the original are somewhat low.
Save as IDML from CC. Open in CS4 and export to INX. Open that in CS3 and export to INX again and open that in CS2.
Good luck…you’re going to need it.