For more than 3 months, i was scheduling my posts to be published each day in specific time (regarding some SEO suggestions to use a specific, fixed time for all posts, so google can better understands the site). I found that Google is so slow in crawling my site, about 30-40 hours late in indexing the last 2 posts.
Inspecting the issue, i get to sitemap generated by Yoast plugin. For e.g. if i've scheduled 15 posts in 15/7 to be published daily, i see Last Modified Time for each one to be 15/7 for all. Shouldn't i expect to see 16/7, 17/7, ....?
Am i wrong? if so, what should i do to tell google that my site will updated regularly ?