ESP 8266 - Deep Sleep possible?

My 8266 ESP consumes 75mah with WLED in standby. (without LED strip).
Is there a way to send the 8266 into deep sleep after a certain time so that it can be woken up again with a button (interrupt)?
I was hoping for a usermod - but can’t find one.
Who can help me?

Unlike the ESP32, the ESP8266 does not have a deep sleep mode. It is very limited by comparison with the ESP32’s capabilities for conserving power.