Cal falls to sleep on his own!

Three times in a row now. Last night we placed Calvin in the Pack N Play before he was completely asleep. He cried for less than two minutes, sucked on his fingers, and then went out like a light - for about 45 minutes. After he woke up, I fed him again, and then when he got fussy, put him down again before he was asleep. Same thing, but lasted for 3 hours. This morning, I re-tested the waters, and Cal cried for less than a minute this time. He is sleeping in the pack n play right now. The next step will be to get him used to his crib. Making progress though, very exciting!