Here's an idea to try on a COPY of your drawing if you don't get a better answer from someone else.
I'm assuming that you have a scaled down drawing. If not, please ignore.
Note the scale and then change the scale to 1:1. Now I assume that your text is the right size but the drawing is a zillion times bigger than the paper. Then change the scale back, but in the scale dialog box check off "apply scale change" and select the right of the two icons next to that check box.