Some in the office can be a little slow. Are you requesting delay or are you prior-service with OBC already? If you do not have orders or a slot for OBLC, then they have approved it, just haven't updated MODS. If your school calender does not allow enough time for OBLC, then the Army will not require you to go until finished. The HPSP policy is pretty well set in stone not to interfere with completing the degree.
Polite insistence will get it done. Send an email once or twice a month, then once a week when you are closer. Bureaucrats want things easy. You need an exception and are no longer easy. So help them make it easy by offering a calender from the school and remind them of their own regulations that finishing school on time is first priority. They do not worry about OBLC usually until April or May at the earliest.
