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

1.
adelgazar, reducir, 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.
Ella decidió adelgazar para el verano.
•
The company plans to slim down its operations to cut costs.
La empresa planea reducir sus operaciones para recortar costos.