Sorry to hear about your poor dad.
I know exactly how you feel, I lost my dad at the begining of April, and mum at the begining of Feb. It would have been my mums birthday this Friday, and its fathers day on Sunday.
I feel like locking myself away, and not coming out until Monday. I know its going to hurt like hell. But I cant, my children and family wont let that happen.
You are doing such a good thing to remember your dad by, and im sure he would have been very proud.
Funny how death can bring out the very best in us, and a far more compasionate and kind side to our nature, I know it has mine.
Sometimes talking about them is the only way I can cope, so I just do it. Like you I think I probably bore everyone by now, but its the only way I can deal with the loss.
I dont know how long it takes to heal, maybe I never will. But I am doing my best to carry on because thats all we can do.
Mum and especially Dad, would never want me and my brothers to be sad. My mum left a note to say she had a wonderful life, and enjoyed every minute, also she would be watching us.
When I feel really down I read the note, and suddenly I feel like shes doing just that.
I hope you feel better soon, and do really well on Sunday x x