I recently did an 8 day IFR bootcamp with the check ride on the 8th day and passed.
It was no joke but I did it. I think I flew 26 hours total in 7 days (took Sunday off to study for the oral), exhausting. About 8 of that was in a Redibird simulator with a G1000 and the plane was a DA-40 with a G1000.
Totally worth it.
I can highly recommend Craft Flight Training @ Charleston, SC (KCHS).