Rein back
Definition 1 of 2
Pro Tip 1/3Policy Scale-Back
Used when governments or organizations need to reduce the extent of activities or plans. 
Due to budget cuts, the council had to rein back the public library expansion.
Pro Tip 2/3Not Physical
Often used metaphorically for non-physical actions, like reducing scope or intensity. 
The director decided to rein back the project's scope to meet the deadline.
Pro Tip 3/3Budget Constraints
Common in contexts where financial limitations force a reduction in spending. 
The company had to rein back investment in new technology due to market conditions.