XIAO RP2040 Deep Sleep mode

Hi, I am using an extremely low power super capacitor to power the XIAO RP2040.
I’m looking for a way to put the controller in deep sleep mode until there is an interrupt on a GPIO PIN.
I found one post from 2022. Just wanted to know if the deep sleep mode is available now on RP2040.

If yes, may I know which library can I use for that? And are there any metrics available to see how much is the clock speed during deep sleep and what is approx power consumption?

Thanks in advance.