Raliced, so sorry to hear of your recent loss. Your father sounded like an amazing person who cared for his family deeply. I know you may feel like his last year was filling with worry, but I would say look at is as he filled his year bonding with his children and being there for them. I'm sure he took great pride being your rock.
Please take care of yourself, prayers going out to you and your family.
Accept what is, let go of what was, and have faith in what will be