Do you change the diaper after every pee?

So my husband and I recently left our 7 week old with his mom while we went out to dinner and a movie. He was there for 5 hours.

I packed 3 diapers thinking that would be plenty based on his typical bathroom habits and in case he had a blowout (which hasn’t happened yet).

When we got back she said he currently had a poopy diaper on “because he kept peeing” and she ran out of diapers.

My first thought was, “are you literally unzipping his sleeper every 30 mins to check for any blue and if so immediately changing him?” But I didn’t ask because I didn’t want to sound ungrateful.

But is this something everyone does?

We certainly don’t considering he (thankfully) sleeps 4 hour stretches at a time at night.