So Lady M is 5 months and has mastered the art of rolling over. However, she does it all night long in her sleep. A little advice needed - do I let her stay on her stomach or try to flip her over? I try to flip when I see her, but she always goes right back to her stomach and I can't just stand over her crib all night long! I'm probably worrying too much - she looks very peaceful on her stomach. Thanks in advance!