noun
gradual entry into nursery/preschool; settling-in period; phase-in
Refers to the practice of slowly acclimating a child to daycare or preschool by starting with short hours and gradually increasing attendance.
来週から慣らし保育が始まります。
The settling-in period at daycare starts next week.
慣らし保育中は、最初の数
During the phase-in period, we leave the child only in the mornings for the first few days.