It’s never a good idea to stare at the sun, but staring at it during a total eclipse is not MORE dangerous, it’s LESS because It is BEING BLOCKED BY THE MOON.
It may seem like you can look longer, but you will not go instantly blind if you look at it.
Use caution, don’t overdo it. Something as thick as two pairs of sunglasses will allow you to see the entire thing. it will last longer than 3 minute- it will slowly get darker and darker then total darkness then slowly get lighter.
During totality it is safe to remove glasses. The hazard is during partial eclipse
Looking at it in totality isn’t what hoses you, it’s the time leading up to and after.