YALL my child just put himself to SLEEP!

I don’t necessarily sleep train (he eats till full, and I rock him until he is in a deep sleep, all his weight is on my arms) today, he ate but was not wanting to fall asleep. So I put him in his crib, turn the monitor on and just watched him...he didn’t cry (I can’t bring myself to do the CIO method, I get anxiety when he cries regularly) but cooed and wooed and ate his arm and I just watched him slowly start drifting off and all of a sudden he just fell asleep!