My little one is 3 weeks 2 days. She is a good sleeper usually going down by 11 and sleeping till 9 with only 1 night feeding around 3. However for the last 2 days she's been waking up at 5 and won't go back to sleep unless she's on my chest. She'll sleep till 10 if I let her. Any suggestions I don't want her to get use to this and not being able to sleep anywhere else. Even though I love it!