From Microsoft: 
At this stage, we anticipate full mitigation within the next four hours as we continue to recover nodes. This means we expect recovery to happen by 23:20 UTC on 29 October 2025. We will provide another update on our progress within two hours, or sooner if warranted.
Although we are seeing signs of recovery and have an estimated timeline, customers may also consider implementing failover strategies using Azure Traffic Manager to redirect traffic from Azure Front Door to their origin servers as an interim measure.