cf-ddns script but with systemd.timer

cf-ddns.service

[Unit]
Description=Update ddns
After=network.target

[Service]
ExecStart=/bin/bash /opt/path/to/cf-ddns.sh

cf-ddns.sh

#!/bin/bash
echo -n "$(date)  "
target_Domain_name="{REPLACE_IT}"
CF_API_EMAIL="{REPLACE_IT}"
CF_API_KEY="{REPLACE_IT}"
CF_ZONE_ID="{REPLACE_IT}"

CF_RECORD_ID4=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records?type=A&name=$target_Domain_name" \
     -H "X-Auth-Email: $CF_API_EMAIL" \
     -H "X-Auth-Key: $CF_API_KEY" \
     -H "Content-Type: application/json" | jq -r '.result[0].id')
     
CF_RECORD_ID6=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records?type=AAAA&name=$target_Domain_name" \
     -H "X-Auth-Email: $CF_API_EMAIL" \
     -H "X-Auth-Key: $CF_API_KEY" \
     -H "Content-Type: application/json" | jq -r '.result[0].id')
     
CF_IP4=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records/$CF_RECORD_ID4" \
        -H "X-Auth-Email: $CF_API_EMAIL" \
        -H "X-Auth-Key: $CF_API_KEY" \
        -H "Content-Type: application/json" | jq -r '.result.content')
        
CF_IP6=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records/$CF_RECORD_ID6" \
        -H "X-Auth-Email: $CF_API_EMAIL" \
        -H "X-Auth-Key: $CF_API_KEY" \
        -H "Content-Type: application/json" | jq -r '.result.content')

REAL_IP4="$(curl -4s ip.sb)"
REAL_IP6="$(curl -6s ip.sb)"

[ -z "$REAL_IP4" ] && {
     echo "You have no IPv4 now."
} || {
     [ "$CF_IP4" != "null" ] && {
          [ "$CF_IP4" != "$REAL_IP4" ] && {
              curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records/$CF_RECORD_ID" \
                  -H "X-Auth-Email: $CF_API_EMAIL" \
                  -H "X-Auth-Key: $CF_API_KEY" \
                  -H "Content-Type: application/json" \
                  --data '{"type":"A","name":"'$target_Domain_name'","content":"'$REAL_IP4'","ttl":1,"proxied":true}'
          } || {
              echo "Real_IPv4 is same like CF_IPv4"
          }
     } || {
          echo "CF_IPv4 not in use"
     }
}

[ -z "$REAL_IP6" ] && {
     echo "You have no IPv6 now."
} || {
     [ "$CF_IP6" != "null" ] && {
          [ "$CF_IP6" != "$REAL_IP6" ] && {
              curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/dns_records/$CF_RECORD_ID" \
                  -H "X-Auth-Email: $CF_API_EMAIL" \
                  -H "X-Auth-Key: $CF_API_KEY" \
                  -H "Content-Type: application/json" \
                  --data '{"type":"AAAA","name":"'$target_Domain_name'","content":"'$REAL_IP6'","ttl":1,"proxied":true}'
          } || {
              echo "Real_IPv6 is same like CF_IPv6"
          }
     } || {
          echo "CF_IPv6 not in use"
     }
}

cf-ddns.timer

[Unit]
Description=Update DNS record with Cloudflare

[Timer]
OnCalendar=*:0/5

[Install]
WantedBy=timers.target