The fastest you could possibly make E5 in the active USAF was 4’years. That isn’t even possible today. You didn’t mention WAPS testing, so I’m not sure I believe your clams without clarification.
I had a mix of active and reserve. Lots of folks here on FR were around when I re-enlisted after 9/11.
I was a cook (services specialist) the second enlistment.
/johnny