Just learned my 3 year old is afraid of the dark...somewhat. He sleeps in his bed fine once the tv…

Just learned my 3 year old is afraid of the dark...somewhat. He sleeps in his bed fine once the tv goes off but....the light over the stove we keep on. But he had a panic attack this morning when i told him get tissue out the bathroom. There are 2 doors but 1 was closed and the other open..he went ballistic!! I was freaking out too! Crazy experience!!