Any way to reduce or get out of a high lease payment?

Nothing to be done about the lease you signed. It looks like you paid a little more than $2k at signing so that’s a sunk cost.

You leased a brand that charges a higher payoff to third parties, so your only exit is to buy-out/resell (only in CA you have 10 days to resell and recover any sales tax that paid) or sell to an Audi/VW dealer. You can check your current payoff and MMR to see how deep the hole is, but you’re most likely flipped.