Good day My little one started rolling over on her tummy at 2.5 months…

Good day My little one started rolling over on her tummy at 2.5 months. Is it normal that she does this so early? Just last week she was only turning over on her side, and already for three days now she's on her stomach. She hasn't even learned to hold her head up properly yet, and can't pull the diaper out from under herself. ? I can't even go to the bathroom for a minute, I have to walk with her ? I'm afraid to leave her alone, I turn around for a minute to get a diaper change and she's face down again, she could suffocate! ? As soon as I turn her back over, she tries to