M1 MBP Randomly entering sleep

Hello,

My M1 Macbook Pro has started to randomly sleep in the middle of use. I am able to wake it up quickly and enter the password, but it is very strange and annoying.

Some details:

• Seems to only happen when I have my external monitor attached (USB-C)
• Running Big Sur 11.2
• Seems to happen 1-3 times in the first hour of use then it's relatively stable, but this is enough to be highly interruptive especially with important Zoom calls happening all the time these days.

Anyone have any suggestions or experienced anything similar? I've attempted to take a look at my power management logs but I can't make sense of what I'm seeing.

Thanks!