Probably nothing else on your end for your current order. Seen other anecdotes of people being told changes to order at this stage may kick you to next month/quarter. Can always check with your SA/DA to see...
If you look at your account you should see this:
"Delivery time frame will be based on reservation date, order date, delivery location and vehicle configuration."
Since you ordered a couple weeks before the end of the quarter, may be at the relative "end of the line"...will depend a lot on your location and configuration and what's leftover. A lot of us on here have had shifting delivery estimates over the past week or so. I think that's just how things go with the craziness of the end of the quarter...