Same, they are currently still working through the 2019 backlog.
There is the option of going through "Right To Choose" system, which is ostensibly quicker but i think you have to pay for things yourself.
GP or doctor can give you proper advice about that though.
I genuinely have no idea if it's an option for you or if it'd even help but for 10/11 days of relative isolation you could try vipassana
Not sure what the northern US wait times are like, but you generally need to book ahead.
It's free, it works on a volunteer basis, no idea how if it works for people with no fixed abode but proof of residence was not required where i am.
Do check if it's suitable for you though, there are rules (albeit not many), they seem reasonable to me but might not be for you.
Isolation wise, there is no communication between attendees, but there are group meditation sessions (though they are also non-talking).
The three aspects that weren't silent :