Zoysia overtake centipede

New construction home, laid dormant centipede Jan 2022. Was coming in great but we had a late freeze, knocked it back and weeds started coming in quickly. Everything I read said not to seriously treat that first season until grass is settled. Well, we are surrounded by a few vacant lots and it’s now a problem. Dallisgrass, every sedge known to man including slender rush, and a smattering of other types, Bermuda grass and the latest is the dreaded torpedo. I treated with a sedge chemical in March and atrazine twice to no avail. I know I can’t kill torpedo in centipede and I know I’ll be fighting the weeds until other houses build. It would kill me to resod zoysia after spending money on sod 2 years ago …so my question is this: I have some bald spots would it pay to seed zoysia in? Is that even a feasible idea ?