Xiaomi LYWSD03MMC BLE Temperature and Humidity Display

Hi, Tony
thanks for your help, I worked perfectly with an ESP 32 and I have 6 connected Xiaomi devices
Query:
It happens that after a few hours you lose the connection and you have to reconnect the ESP32, I don’t know if the same thing happens to you?

How can I put the time of the last reading on the card?
I want to see the same data that appears when you click on the sensor but on the dashboard card

Thank you

Captura de Pantalla 2020-07-13 a la(s) 20.59.09