MM,
I once had a Medrol pack and when I finished it I started to feel better and then got worse. It was not enough steroids to treat issues that involved balance, eyes and other problems.
I went to another Neuro because of ins change (yearly changes, sigh), she put me on 5 days of high dose IVSM right away. It had become a acute relapse by then. It happens to the best of us.
They try the least dosage possible at first, if mobility is involved than usually IV steroids are needed, JMO Call the Neuro again, and maybe they will say finish the Medrol pack first and give it time to work, or increase what you are being given. I hope you jump back to a mild case soon.

Keep us informed.