Stopping Sleep When MinimServer actively streaming

[M_C]

My setup is fairly simple, I have a small form factor PC running MinimServer, a NAS with my ripped music and a Naim Mu-So which I control from the Naim app. I use Control Panel/Power Options to set 'Put the computer to sleep' at 4 hours.

However, often, my music listening goes beyond this and my PC goes to sleep mid session. I know it is relatively simple to get up and wake it, but it's awkward if there are guest round, etc..

I'd like a script (e.g. Powershell or similar) that I could set to run periodically that would set 'Put the computer to sleep' to 'Never' when MinimServer is actively streaming, but back to say 20 min when streaming has finished and no music is being played.

I have tried all sorts of tactics, interestingly helped by Copilot, but can't reliably tell when MinimServer is active.

Has anyone solved this - I see lots of posts about MinimServer preventing sleep, but I have the oposite issue - the PC goes to sleep when I'd rather it stayed awake. How can I detect that MinimServer is active?

Any thoughts? Thanks in advance.