RTL8721DM - Maintain WiFi connection (MQTT) with deepsleep

Hello,

For a project, I need to wait a wifi (MQTT) message to do an action.
The system is working on a battery with a solar panel. So I need to minimize the power consumption, but listen to wifi anyway.

The Chip used is a REALTEK RTL8721DM with SDK sdk-amebad_v6.2C-RC.tar(23331).gz + 6.2_patch_integrated_221206_bf3b2a72(94571)

What is the lowest power consumption I can expect?

I’ve tryed using wifi_enable_powersave() / wifi_enable_powersave_for_coex() and power consumption is better, but still high.

I’m using FreeRTOS and I let him handle sleeping while not active.

How can I do it better? Is there any example available?
I know there is a subject on it : RTL8720DF power consumption while maintaining MQTT connection with server - #4 by dakamaster
But this topic still have no answer since nov 2023.