Crying it out.

1st time mom to my sweet baby boy. He is generally a good sleeper but does wake up at least once a night. He’s 6 months. We have done cry it out the past two nights. And honestly he doesn’t really cry to much but mostly fusses loudly. In total he’s cried it out around 5x now between the 2 nights and during a nap ( he was dead tired falling asleep in his high chair and woke up 5mins after being put down). Anyways I have noticed it’s becoming shorter. Is this normal as the process goes on? Also how long did this process take for you?

Ps. Not interested in anyone telling me how “wrong” this is. Thanks