How can I get some sleep?

My husband's incontinence is especially stressful for me during the night. He wakes up when he feels the urge to urinate and then pulls the depends off on his way to the bathroom, leaving a mess all the way. When I put a condom catheter on he will pull it off at night because he cannot remember what it is there for. The result is that by the time I wake up the damage is done and I have to wash him or give him showers and clean up the surrounding mess and the bed often twice during the night. Cannot get more than 3 hours sleep at a time and am going insane. I work from home during daytime which does not allow for much rest in between.