kingsville boxwood

as said in the title I recently bought a kingsville boxwood and I believe I let it dry out but it has new growth so I’m confused on if I can revive the browning leaves or if I have to start from scratch?

Hi everyone, I’ve been growing this kingsville boxwood over the last 8 years and have never seen something like this. Curious to get your thoughts. The leaves have been turning yellowish/ bronze colored and in some instances new growth has been drying out (in select places). The only thing I...