by the minute
US /baɪ ðə ˈmɪn.ɪt/
UK /baɪ ðə ˈmɪn.ɪt/

1.
minuto a minuto, a cada minuto
continuously and rapidly changing or increasing
:
•
The situation is changing by the minute.
La situación está cambiando minuto a minuto.
•
Her confidence grew by the minute as she spoke.
Su confianza crecía minuto a minuto mientras hablaba.