scale back — to reduce the size, extent, or number of something

a construction foreman holds up his hands in a stopping gesture while pointing to workers operating large bulldozers and cranes. The foreman directs several workers to move the heavy machinery away from the work area. As the equipment gets relocated, fewer workers remain active on the construction site. The remaining crew focuses on a much smaller section of the original work area. Other workers pack up tools and materials that are no longer needed for the reduced project. the construction operation being scaled back to a smaller size and scope