for 13 week old son:
I swaddle, patt-ssh on shoulder- which only works if he is really crying/tired, wait until he is quiet for a mintue or two--lay him down awake and then shield his eyes and place my hand on his chest. if he is tired enough he will turn his head away (to the left) and fall asleep. I stay for a couple extra minutes depending on how long it took to settle him. If it took a long time--I usually stay for longer.
Good luck,
Deborah