Pattern resizing question

[elekdragon]

I have a pattern, and I am interested in reducing the size by half. So, for example, currently the item is 40x20 and I want it to be 20x10. I can't go with smaller count cloth due to sight issues, so I am hoping to resize the pattern to make it smaller.

Does anyone have suggestions on how to best go about shrinking a pattern?

Is my only option to just completely redo the pattern by hand and try to keep the same look?

Anyone have experience with resizing a pattern?