create
/usr/local/sbin/wg1-healthcheck.sh
chmod +x /usr/local/sbin/wg1-healthcheck.sh

create
/etc/systemd/system/wg1-healthcheck.service

and

/etc/systemd/system/wg1-healthcheck.timer

systemctl daemon-reload
systemctl enable --now wg1-healthcheck.timer

Alternative via Cron

* * * * * root /usr/local/sbin/wg1-healthcheck.sh >/dev/null 2>&1