Rigado BMD-340 - NRF52840 BLE + OpenThread sleep mode - current consumption

We are developping an application using an NRF52840, Based on nRF5 SDK for Thread and Zigbee V3.0.0

Running S140 softdevice

We are using BLE advertizements and Openthread communication.

In the main loop, there are 2 lines for OpenThread communication

thread_instance_init(); for init (once)

thread_process(); (in mainloop)

Monitoring the power consumption in sleep mode, the Openthread communication keeps the current around 590uA.

If I disable the init and process line for thread, the current drops to 90uA.

Is it possible to turn on and off Openthread in a controlled way?

How can this be done?

Using nRF5 SDK for Thread and Zigbee V3.0.0.