Fellow Reserve Pilots, how to approach an early morning call window?

Next month my reserve block is now 0300-1500 instead of 0500-1700. 2 hour minimum callout.

I'm extremely tempted to sleep till 5 as I do now and just let my phone wake me up if I get a call, but I'm still on new hire probation and am nervous about missing the call/sleeping through it.

Anyone have any other tips for how to handle early reserve periods? Anyone use a device or speaker that makes your ringer insanely loud? Open to any suggestions

I don't mind reserve, I live in base and its been working well. (Even got some weekends off this month) Just looking to make it as simple as I can.

Thanks y'all.