Based on your OD, you have a very high chance of getting the car within the week if you change now. It's a matter of switching, waiting a couple of days for your EDD to change to something like "Aug - Nov 2022" (based on your configuration as shown in your sig you seem to have the exterior color as red and that's an upgrade, so you have an earlier EDD), and the next day have a much earlier and shorter EDD window. I've seen people from early January switch from RWD to LR and 3-4 days after switching already got a VIN and scheduled their delivery. You have high advantages over us late April orders who initially went for RWD but switched to LR.
It's more money, yes, but RWD is backordered really badly because Hertz's order batch still seems like it's not complete.
In conclusion, people switched from RWD to LR with very early ODs and got a VIN no more than a week. SAs often like to say they can't speculate, but we often resort to what people went through. Tesla prioritizes orders by ODs. They see an order from 2021, they run right to your order and build your car and skip everyone else.