Hello,
If Wake Source Count is 0, it usually means the PC is not waking up by a device, but something is preventing it from entering sleep correctly.
Please check what is blocking sleep:
1.Open Command Prompt as Administrator and run the following command,
then press Enter:
powercfg /requests
2.Then run the next command and press Enter:
powercfg /devicequery wake_armed
3.Try a clean boot.
How to perform a clean boot in Windows
Some background apps can block sleep after running for a while.
Since reboot temporarily fixes it, something is getting stuck over time.
The commands above will help identify the exact cause.
When did this issue start happening?