Welcome Patrick, so sorry for your loss
For me when Paul went for the first year I slept like a log, soon as my head hit the pillow I was gone.
Then i had nearly 2 years of getting to sleep and failing, since January I have taken up walking, this last fortnight going to a gym and today jogged round my local park with my dog Pip for company. Think with all this exercise it is making me tired and helping me to drift off without counting sheep.