WFM API Rate Limiting Behavior During Bulk Schedule Imports

Our multi-org AppFoundry integration is hitting 429 Too Many Requests errors on POST /api/v2/wfm/schedules when pushing high-volume schedule updates. We implemented exponential backoff based on the Retry-After header, but the limits seem aggressive even with single-threaded requests in the US-East region. Does anyone know the exact per-org rate limits for WFM schedule endpoints and if there is a recommended batching strategy to avoid throttling?