Dad showering with daughter

I’ve been bathing/showering with my daughter since she was born. She now almost 3 years old. She’s noticing my male parts are different than hers. I’m teaching her that it’s daddy’s private part called a penis. She points it out and repeats it every now and then. It just turned out this way cause my wife has a bad back so I’m helping her. But sometimes she just stares at my appendage now that she’s getting older. It makes me feel awkward. When should I stop showering with her and leave it to her mom?