Cao Ljiljana,
It is not unusal to not hear anything from Vienna, I actually think they try to go out of their way to keep us in dark. As for the medicals, my husbands expired in September last year, and they requested a new one just last week so I am hoping we are getting to the end of this nightmare. There are different opinions regarding re-doing the medicals...we waited, but there are people who did them on their own. I don't think it would save any time doing them in advance as they would probably request a new police certificate and scedule A also at the same time. Once time comes this is required they will let you know.
All I can tell you is that you have to be patient Vienna is very slow
Eva