Sleep training CIO

Jessica🎀
I do not want negative comments!!!
So I am due at the end of December with baby number 2.  And decided to slee train. It has been a long road. And I finally got to the point that CIO is the only thing left. 
I started tonight and it wasn't nearly as bad as I thought. I went in at 10 minute intervals and just laid him down. And told him goodnight. 
It only room 20 minutes. And I have the most stubborn baby you have ever met!!! 
He has woken up but he cries for less Han 2 minutes and goes back to sleep. 
I was against CIO at first because all I was being told is you let your baby cry till they go to sleep without ever going in. 
I am so happy I decided to do this.  
I know after a few days he will sleep better. And be an all around better sleeper. 
I decided to do this for him! Not me! Yes sleep is important for me too but I want my son to have good sleep habits. 
I just wish I would of started earlier but I cherish the past 11 months that I slept with my baby!!