Yes, when I've been in exacerbations I've averaged 15-20 hours of sleep per day. I'm glad you're going to call it in to your neuro, these are the things that at least help them know your course with this fun little disease.
Beth, your body obviously requires it right now, please do your best to allow it, denying yourself that time for damage control will only prolong things if it is an exacerbation.
Feel better, little friend.