In this case, please make sure that you have submitted the XML sitemap to your Google Search Console property. If yes, please also make sure that you have a clean robots.txt
file.
If you have the XML sitemap and robots.txt
crawl rules correct but the crawling rate is decreasing, this means your site doesn’t have enough quality inbound links, Google will not crawl your site very quickly. You can imagine it doesn’t necessarily want to spend much time on a site that it doesn’t deem important. When your site is brand new, this will be the case. Please, refer to our this article to learn more about this.