Okay, I think I got it finally! Tell me if I am right. I can select the "all of it" option regarding Box 1. Since the amount in Boxes 3 and 5 just show the amount of the wage taxed for their categories (not the wages from before the certification, like Box 1). What matters is making sure Box 1 "clears," so it is not taxed.
I was so confused because I saw online some people were saying to input the amount from Box 3/Box 5 and choose "none of it" regarding the wage in Box 1. However, their situation wasn't exactly like mine, so I didn't know what was right.
