Nighttime potty training age

I have heard and read so many mixed things and am wondering what age I should stop having my daughter wear pull ups to bed? I’m worried to wait too long, but nervous to start too soon - ugh!

Googling says kids can’t hold overnight until five or six, but my mom swears all three of us kids were trained at 2.

My daughter just turned 3 in November. She’s been day trained since last June and stays dry over naps. She’ll wake dry some mornings, but not all. Maybe 70% of the time? Should I wait or bite the bullet now while I’m up with baby brother anyway?