3 DC cluster Tidb down when all Dc connections are down

Hello All,
I have installed a stretched cluster over 3 Datacenters on 9 Nodes. Each node has Tidb, PD, and Tikv roles installed. Recently I have tested disaster scenarios. When all DCs lost connection between them Tidb stopped answering queries. It could be normal behavior but I need to access the database on each Datacenter. Is there a way to Tidb run in read-only status when this happens?