I'm not sure we're understanding each other so just to be clear, my suggestion is to change from this (pseudo) C:
wifi_connection_config_t config = {
.ssid = "my_home_wifi",
.password = "secret123",
/*
implicitly initialised to default:
.method = CONNECT_TO_THE_FIRST_AP_THAT_RESPONDS,
*/
}
to
wifi_connection_config_t config = {
.ssid = "my_home_wifi",
.password = "secret123",
/* explicitly initialise: */
.method = CONNECT_TO_THE_AP_WITH_THE_STRONGEST_RSSI,
}
It's that simple.