Again, again and again. It is not possible to only check if a page is cached or not. Every check is a HTTP request and a request causes to cache a page! You can check it by your own. Purge cache of your homepage and run this curl command. If done check cache status:
curl -k -I -s -X GET -H "User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.3683.47 Safari/537.36" "Accept-Encoding: gzip, deflate, br" "https://www.priazha-shop.com/"