I lived with my dad and took care of him the whole year that he was sick before he died. After that, I would hear the outer door slam around 5:30 (we had a condo) and would expect him to walk in from work. I had a year to prepare for his death. I watched them take Dad from the house after he died at home, but I still expected to see him at 5:30. It took months for that feeling to go away.

You have only had two months to adjust and grieve. Give it some time and the feeling that he's still home should pass.