Graduated from a accreditation expired college and working on a OPT now, what to do for STEM extension

I am working now for a big client on OPT and my OPT is until Feb2018, My employer decided to convert me as full time, the problem here is, my college accreditation is cancelled hence I cannot apply for a STEM extension. What other alternatives are there so that i can convert to a full time and continue working while I apply for H1B also next year.