Does the Raid Den time skip glitch still work?

Im trying to hunt for a perfect IV ditto at the gauranteed Ditto raid den. I am able to soft reset for a purple den, that part is fine. The next step is to invite people offline and advance the date in order to spawn a 5* raid, but there is no option to search while offline, and the game cant invite people when I am offline...is there a step Im missing?

Not sure if this glitch is still working, when I am able to advance the date and get a new Ditto, its online, but it seems like the Dittos that spawn have IVs that are set in stone. I have the gsme saved at a 3* raid. When I start the game, I advamce the date 2 days and I always get a 5* Ditto, but it always has the same IVs. Does anyone know what im doing wrong?