Usually, your university don't do the extension your J1 after you got waiver. But I know some people do it, it is Ok.
Another thing, H1 is very easy to get it if you work in University. The only thing is you need to wait 3 months if you don't apply with the premium process. Applying the waiver as early as possible, it seems that the J1 waive need longer time now.
Another thing, H1 is very easy to get it if you work in University. The only thing is you need to wait 3 months if you don't apply with the premium process. Applying the waiver as early as possible, it seems that the J1 waive need longer time now.