sorry to hear you've been dx'd with MS.
You sound like you're recovering well with the steroids - they continue working for a while after you stop taking them.
I haven't had the Hug/tingly feet happen when taking steroids myself, but the lack of sleep is definitely related to taking them. I can hardly sleep on steroids - it will return though when you stop taking them and you won't miss the sleep even though it feels weird not to sleep for a few nights.
Hope you continue to recover from the relapse and let us know how you're getting on.
RR-MS dx 1998 and Coeliac dx 2003
Copaxone, Cymbalta. EPO, Fish Oils, Vitamin D3 2000 IU daily, Cal/Mag/Zinc, Multivitamin/mineral, Co-Enzyme Q10, Probiotics, Milk Thistle.