I have to take a lot of piriton anyway in the summer (sometimes six a day) and don't sleep well since a back injury in 2017. I'm often up in the night having tea and toast, then walking the dog around the garden.
It doesn't matter if I can have a nap in the afternoon. I do worry, though, if I'm out for the day and can't lie down (bad back and extreme tiredness).
I sleep better if I go for three long walks, rather than the usual two, also if I take codiene or tramadol (although I feel awful with a fuzzy head the next day).
The worst time was the night before my daughter's wedding, when I couldn't sleep at all at the hotel. Being claustrophobic, I spent hours wandering around the car park and was drained on the big day, drinking loads of coffee!