Some ideas:
1. xml sitemap
An XML sitemap shows Google’s spiders how and where to crawl your site.
Set Auto-generate sitemap.xml on (Like this each blog post will be under this map)
2. meta title and decription for each blog post (Really easy to set):
3. Google - Search only in your site
Under google search write site: + site: + absolute-url
site:www.my-site/blog/
If you wrote 30 posts but google only index 5 - maybe you block PAGE X by robots.txt or by meta-tag noindex or canonical issue (Thier is a lot more ideas “why not” but this is the “famous” problems).
For steps 3 & 4 first verify your site:
verify the ownership of your Webflow site - SEO tutorial
4. Google console - Update Google as quickly - fetch as google
5. Google search console → coverage
You get a lot of information her about index issues: