Hello everyone. Blog indexing

I have wordpress blog. I’m doing around 15-20 posts per day. So can you tell me why Google indexing my website around 2 times a week and not after 1-2 hours?
And what do you do for your blogs indexing?

I have wordpress blog. I'm doing around 15-20 posts per day. So can you tell me why Google indexing my website around 2 times a week and not after 1-2 hours?
And what do you do for your blogs indexing?