IEEE802.1Qbv time-aware shaper (TAS) has attracted attention as a technology to realize low-delay communication in various fields. Especially in industrial networks, the demand for low-latency communication between remote areas is increasing, and the realization of a service provider network (SPNW) using TAS is expected. Since SPNW frequently adds and removes users, increment scheduling is suitable for creating gate control lists (GCL) that control frame transmission for each node. The bandwidth utilization efficiency is worse when the order of scheduling cannot be controlled like in SPNW than when the order of scheduling is ideal. To cope with such problems, we focused on the difference in scheduling difficulty depending on the allowable jitter amount. This paper proposes a rescheduling scheme that enables scheduling of flows with small allowable jitter (high scheduling difficulty) by temporarily opening schedules of flows with large allowable jitter (low scheduling difficulty). The rescheduling scheme improves bandwidth utilization by up to 22.9%.