Find an indian consultancy somewhere, that will help maintain your status, but I guess it depends on what your major is.

yeah dude, this 90 days period is really sucks. I think USCIS is going out of their mind. If you are interested in IT then you can join some consultancy(it doesn't need to be everify for now), you might need everify company later when you file for your OPT extension. If you are not in IT field and not interested in it, try to find some volunteer job. You can submit volunteer job without any pay to prove that you are in status and you have the job to USCSIS. Best of luck

Dude You just need send information about your employer to your school. In your case, since you are not employed, try to find some voluntary work. This should take care. Or else if you are working in some place (Aaltu faltu job to pay bills), and u get paid by check, you can provide that information too.. I am not genuine source of information, but as far as I know, you just need to be employed. Hope you will find something soon.