Google is not reading my sitemap of my wordpress site automatically. The 'last date read' remains the same as the submitted date. I had updated the contents of my site a couple of weeks ago, and the contents of sitemap were also updated automatically. But the updated sitemap was not read automatically by Google thereafter. I waited for a week but it remained the same. Finally, I was forced to resubmit the sitemap and google now discovered by new URLS immediately.
Is this normal? Does google take weeks to read sitemaps? Or is this some problem from my website side?