Should I be proud?!

My Lo is about to turn 5 months old. He used to sleep in bed with me, now he refuses to even fall asleep next to me. 
I have s pack n play next to my bed that he now sleeps in peacefully. I lay him in it awake, he fusses a little (he's been fed, burped, and changed). They're just tired whines. Then after a few minutes.. He falls asleep!! 
Does this mean he finally likes to sleep alone? I do swaddle him with a blanket (arms out). Just so he doesn't startle himself awake.