Kell, my considered opinion is that this is not a time to self-medicate. My guess is that you're heading into or in a bout of ON and your neuro will probably want you on IVSM first. They don't like us to take too much in the way of roids and it's risky to make these assumptions.
If you feel it's too long a wait for your appointment, put a call in to your neuro's answering service and ask for the proper advice.
In the meantime, concentrate on taking it easy, your boys are grown men and need to help you now, not expect their mommy to make everything perfect for their Christmas.