Mines - I feel for you. Those dreams must really hurt.
My dad died of a heart attack 12 years ago now. He collapsed and died at our local train station, in front of a platform full of people.
When he died, I was told it would take 7 years to 'get over it'. I remember thinking that was a life sentence at the time, to feel so bad for that long. I also didn't want to 'get over' my dad iykwim?
For me though, time really has helped. The pain did stop feeling so raw after a few years, I stopped thinking 'maybe he didn't really die', or that I had just seen him in the street.
MIlestones hurt - the birth of my children, changing jobs, houses, stories on the news I know he would have loved to talk about with me about. I miss not having a father figure too - someone looking out for me kind of thing.
But, 12 years on, I don't miss him day to day anymore. My life is so different now - I realised I have 'adjusted'. While it feels disloyal to not 'need' him anymore, I never thought I would feel that.
Not sure if this helps tbh. I just wanted to say, I loved my dad. Losing him was the hardest thing I have had to deal with, and it does still hurt and make me feel cheated for him and us as he died at only 60. However, I now live my life without feeling the pain there all the time. However this realisation took at least 5 years after he died.
Take care, and be kind to yourself.