Exams are serious and it’s not as easy as taking five seconds.

it’s not easy because he has to stop what he is doing , change his thinking, then try to pick up where he left off

I suggest you , or he, set a time, the same time, everyday or every second day , so he can plan around it.

also, waiting for calls to come all day because it’s random sucks, it creates worry

set a time so you can stop worrying

How would you have coped before telephones? You had to trust.

big hugs