I don’t know much about sleep these days, let alone dreaming but I have discovered a new nightmare…
Unable to sleep til nearly 5am most nights I now find myself constantly nodding off during the afternoon and panicking because my wife’s not there - then I have to realise she’s gone all over again.
I too suffer from the same pattern, im not one for books have done the occasional jigsaw and crosswords. Been four months since i lost my wife with pancreatic cancer that had spread to her liver. 
Lost her within six weeks. Take care hope you manage to get your sleeping in order. 
I think we have all been there with the sleep. At 4 months my sleep has improved but I seem to wake at 5am, and I still get the occasional bad night . I do know that being tired makes the grief so much harder to carry, so please see your doctor and see if he can prescribe something to help. You deserve anything that can make things better. I wish my husband would appear in my dreams. Unfortunately he has only 3 times, once we were having a row. But one dream I got to give him a kiss and I felt happy all day.
That’s something I’ve had waking up aftee i have dozed off, waking believing she’s still here it’s a horrid feeling.