Mac desktops waking unexpectedly from sleep . . . solved?

It's a pain in the proverbial when you put your desktop to sleep only to have it wake immediately or even worse, wait a few minutes until you have left the room!

My iMac does it only occasionally but my M2 mini wakes immediately most times I put it to sleep or waits for me to go away.

The problem is most likely BlueTooth interference from the non-Apple keyboard and mouse.

In the old days you could switch off "Allow BT devices to wake the computer" but since Monterey this setting has been removed.

An hour ago I discovered a free app called Bluesnooze which switches off the BT keyboards and mice when the computer sleeps.

https://github.com/odlp/bluesnooze/releases/tag/v1.1

Obviously you can no longer wake the Mac with the keyboard or mouse but I find a brief press of the power button wakes the machine after 5 or so seconds.

It's early days but it does appear to have cured the problem.