I am so sorry this has happened to your Dad, and to your family 🌹
My Mum was 70 when she went into hospital for a routine simple operation and then got sepsis which she never recovered from. We went from her being okay after the operation, to getting that phone call that she had developed sepsis and was being moved to ICU, to being told she was dying within 2 days.
Sudden death is brutal. The shock was overwhelming. Getting your head round your otherwise healthy parent, who was only 70, suddenly being here one minute and gone the next, with no chance for goodbyes is horrific.
I feel for you and just couldn't read and not offer you my greatest sympathy as I know how this feels and its traumatising.
Please lean on your family and friends, you will need them as you navigate this awful time. And, baby steps, take one hour, one day, one week at a time.
You will come out the other side of it but it will feel wrong and surreal for a while and you will have all sorts of mixed emotions as you try to deal with your loss and your grief.
Sending hugs xx