How to use t3-oss/env-nextjs without having to rebuild everything just for env variable change

export const env = createEnv({
    server: {},
    client: {
        NEXT_PUBLIC_BETTER_AUTH_URL: z.string().url(),
    },
    runtimeEnv: {
        NEXT_PUBLIC_BETTER_AUTH_URL: process.env.NEXT_PUBLIC_BETTER_AUTH_URL,
    },

    // skip validation for CI and lint
    skipValidation: !!process.env.CI || process.env.npm_lifecycle_event === "lint",
});