My brother is in VA. He ordered a can on 10/3/20 though Silencer Shop. Stamp ck cashed 11/3. FFL called to let him know they got his stamp 3/24/21.
I ordered mine 10/7/20, ck cashed 11/17/20. Hopefully I'll be soon.
Update, 4/21/21
According to Jen at ATF/NFA. My form 4 has a 7mon wait. But, many are getting approved from the as time period.
Got the call for stamp approved 5/4/2021