Stumbling and numb fingers/hands

I’m currently on 40mg prednisone daily and still noticing increasing weakness and extreme numbness in fingers and hands. I’m walking but with weakness upo to thighs and notice the difference on a daily basis. Any suggestions on prednisone dose increase? Does it slow down the demyliation? Or should I try for plasma exchange? Anyone in the forum who might be well informed on this?

Naturally, this happens on a holiday – so dr.s hard to reach.:p