Laura I'm glad you are started on treatment. Never fool around with your eyes or mobility. Always call, it never hurts to let them know how you are feeling.
I found on IVSM I would sleep 4 hours and be awake for about four hours. I never slept long enough but I slept often enough, to make up for it, since I was home anyway.
Eat potassium foods like bananas, potatoes, yogurt and plenty of calcium foods or supplements with magnesium and zinc added, so your bones stay healthy from the steroids.
I hope your eyes feel better soon. I had O.N. a few times. Sometimes with the ice pick in the eye pain or the blurry Central Scotoma vision.
Two relapses in four years in pretty good.

I had them 4 a year for a about 5 years in the middle of my 30 years with MS.
Good luck with the steroids. Keep us updated on your eyes.