I wonder if it would work if you started getting ready for your nap before you start nodding off? If the nodding off generally happens about 3 PM, maybe you could have your DH transfer you to the recliner at about 2:30, and you'd ease into the nod-off phase while you're already in the recliner.

Or maybe you're just not used to sleeping in the recliner? If so, could you rig up your wheelchair so you could nap in it--as you apparently are doing, but making yourself more comfortable so your head is supported better, for instance?

Just a thought.... I'm sold on the idea of getting enough sleep.