sleep training

My son is 2 weeks old today. And he's an amazing sleeper! I breast feed and only have to get up 2 or 3 times during the night to feed and change him. He's up by 7 am and goes to sleep at around 930/10. I do still have to rock him to sleep before he goes in the crib in his nursery though. I'm wondering when I should stop rocking him and start letting him fall asleep on his own? I don't want him to develop any bad sleep habits since he's already on such a good schedule. I know it's still early but I go back to work at 6 weeks and would really like him to sleep completely independent by then. The way he's going now I think it's definitely possible!