Autumn,
Welcome to the forum.
It's good you've been able to get off prednisone.
I think your blood sugar dropping so fast might well be due to prednisone.
There are some people who have sugar problems as a result of prednisone use.
But are your hydrating with enough water?
what are your eating after exercising? I would recommend some form of protein.
What meds are you currently on?
Are you taking any supplements?