Since you are already on light duty, I assume the company is aware of your claim...you may be eligible for temporary partial disability benefits based on your decrease in hours, but that can vary under Wisconsin law...You wil have difficulty obtaining an attorney since currently your claim is not worth that much money...but I would check the Wisconsin states regarding temporary partial disability...
The name of your employer's workers compensation insurer is registered through the department of labor in Wisconsin(a requirement by law)...since you are not represented you can contact the carrier directly...be careful tho...because they goal is to get you to settle within the schedule...
I would also suggest contacting a workers' compensation attorney in your area...they work on contingency (no money up front) but if you end up with a perm rating they will make something in the settlement... You left many of my questions unanswered so that is the most I can do for now.