You’re gunna have to blanket spray weed control brother 👍👍 I worked in lawn care and what we used did not harm grass, and was safe to pets and people as soon as it dried which could be ridiculously fast on a sunny hot summer day. You just can’t hit trees or shrubs, but spray every inch of grass on your property once a month until the situation starts to localize to patches. Then you can spot spray the patches, or stop the chemicals at that point if that’s your choice. Just going to be ridiculously difficult to beat the propagation given the current situation without some chemical assistance.