FTM QUESTION ABOUT TUMMY TIME

Natasha
FTM my daughter will be a month Nov.3 .. I put her on her stomach and she was lifting her head and pushing her feet and kicking. What does that mean lmao? Is she ready for tummy time. I was told tummy time starts at 6 weeks. And did not want to do it so early. Is it safe? I wanted to start tummy tomorrow. FTM need advice