Back to sleep?

So, around 6 weeks, we decided that Jordan slept better on her tummy. Well, I've been reading a couple of different books on sleep and, of course, they have to advise against tummy sleeping. One of the other things they suggest is an early bedtime, but I digress! Tonight we went to put Jordan to sleep and as usual, she had fallen asleep on my shoulder while burping. So, I laid her down on her tummy and she was fidgety and unhappy. Kenneth suggested putting her on her back. She laid there for a few minutes and without a peep went to sleep! Now, I'm not sure when Kenneth became a parenting guru, but it was a good move! The only downside is that she gets up more frequently because she throws her arms around, etc. (That's why we were putting her on her stomach to begin with.) But, when she did get up and nurse, I could lay/lie (?) her back down and even if she wasn't asleep, she would drift right off. So, we've decided that it's better for her to learn to get herself to sleep now and work on longer periods of sleep later. I am not gonna lie--I miss those 7 hours stints I could get when she was on her stomach, but at least now I don't have to wait until she's comatose on my shoulder to put her back down!