Phantom radio tones when falling asleep

Hey all, I’m [28M] a new paramedic (3months) and I predominantly work nights or 24s. My circadian rhythm has been annihilated by my new career (which I wouldn’t trade for the world, I love it). But over the last two weeks I’ve noticed that right when I fall asleep my brain will occasionally play the tones of my radio extremely loud and I jolt awake, only to realize I’m either not even on shift, or my radio didn’t go off. Has anyone else experienced this and if so, how do I combat this issue?