Hi sweetie, sorry to disappear on you, life got crazy!
Glad to hear sleep is better!
When you suggest taking the rails off the crib, would you mean that you think he is trying to climb out? I waited until I thought mine could really climb out -- happened at different times for all of mine. I found mine could put their legs up long before they figured out how to climb out! Like anything else, it results in some very crazy days and nights and then it all settled back down.
I think by independent sleeping, people are just talking about falling asleep on their own without you having to be there. You would still need to steer him to bed at a certain time.