Update: Saturday 26th January.
Last night was exceptionally demanding, basically, my wife (PWD) needed help at eleven, one, three and five in the morning. What was different is that I went to bed at 6 pm and managed to grab a few hours sleep. Between the hours of eleven and five, I think I was just dozing most of the time as getting off to sleep is something I find hard to do.
The good news is that for the first time in years the loud tinnitus in the back of my head has gone.
Day centers are out of question for us since our doctor has taken away my driving license for one blackout last week. Also even although I need the sleep I find it also impossible to sleep during the day (unless I sit down on the sofa and watch TV).