Sincerest condolences.
So glad for your time together at the end, that will be something you cherish forever. 6 years ago the nurses looked at my dad and said “but if you go home you’ll die” and he said “I know now check me out if here”, that time at home is what he wanted, and he died in the same bedroom as his dad, with family around.
Its hard but you can honor him as you move forward, and learn to mourn.