Actually, this terrified me. If DS had gotten up onto his arms and rolled over he'd have fallen out of his moses basket! But he didn't.

If your baby can lift head and roll over, if your baby's head is not covered with blankets or near a pillow then tbh tummy sleeping isn't unsafe. Nothing with babies is safe because they'll find a way to do something stupid, but it's not a huge risk factor any more.

And it's not a silly question (no such thing), I bet it's a huge worry to many and they just haven't posted. At least your mind is at rest now.