I bought a sphynx kitten but it won't arrive for about a month. And I just realized I've never had a kitten before. Can a 12 week kitten be left home alone? Do I have to keep it locked in a room, because my apartment is on the second floor and has a staircase. Do kittens need special food, or can she eat the same stuff as my main coone? Do kittens behave differently than adult cats? Kinda nervous at this point.