The Parkinson’s makes physical movement difficult, the Alzheimer’s makes understanding Step 1, 2, etc to perform the movement difficult. Something that worked for me- get a bariatric bedside commode, place alongside the bed near his pillow, facing the bottom of the bed. When he has to go, he sits up to the edge of the bed, makes a quarter turn onto the commode, uses, quarter turn back to the edge of the bed, legs up to lie down, caregiver empties the commode bucket. This method has just a few steps, versus managing him getting up, walking into the bathroom, on and off the toilet, walking back to the bed, into the bed, now fully awake. I bought the commode on Craigs list. Many communities have service clubs that store and give out “durable medical equipment”.