slim down
US /slɪm daʊn/
UK /slɪm daʊn/

1.
emagrecer, reduzir, simplificar
to reduce in size, especially to become thinner or to make something smaller or more efficient
:
•
She decided to slim down for the summer.
Ela decidiu emagrecer para o verão.
•
The company plans to slim down its operations to cut costs.
A empresa planeja reduzir suas operações para cortar custos.