Please advice to improve wifi offline after sleep mode and spending about 6 minutes.

Please advice the method to keep wifi connection in sleep mode.

I am getting Quest 2 display to PC using scrcpy and adb.
At the case of using USB cable, there is no issue when Quest 2 is even sleep mode.
After disconnect USB cable ,the connection between Quest2 and PC changes to wifi. When detected headset sensor, Quest2 display can be watched by PC. After headset sensor is not detected , spend the sleep time (now 15sec) setted by Quest2 , changed to sleep mode.
But when do not connect to USB cable again and spend about 6 minutes, it seems Quest2 disconnects wifi due to long sleep mode.
I want to improve this wifi offline issue after about 6 minutes ,because it is difficult to recover unless restart  PC software.
If Quest2 has the setting to keep wifi connection in sleep mode as Android function, please inform the method.
I know the setting of always wifi off by adb for debug and settign of sleep time by Quest2.
I would like to satisfy both sleep mode of short time and wifi connection.