Help With Weed ID and How to Kill Please!

I live in eastern Nebraska, and just did a full reno last fall. I put down 5 yards of soil, and I am guessing that this weed came with it. The closest I can find on a plant identification app is common penny-cress or hoary alyssum. I just put more grass seed and starter fertilizer down, so I will likely wait to cut a few times before I put any herbicide down. Any advice on how to kill this nasty stuff is welcomed and greatly appreciated!!